Photo: Sir Francis Day (Public domain) — via Wikimedia Commons
Melon Barb (Haludaria fasciata)
A compact, jewel-coloured schooling barb from the Western Ghats — playful enough to be lively, peaceful enough to share a community tank.
Will it live with a Melon Barb?
We compare each fish against your melon barb on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- Agassiz's Corydoras✅ CompatiblePeaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
- Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Bamboo Shrimp✅ CompatiblePeaceful · 8 cm · Medium care · 22–27 °C (72–81 °F)
- Compatible on the things that matter: shared water near 22–27 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Betta✅ CompatibleSemi-aggressive · 6.5 cm · Easy care · 24–28 °C (75–82 °F)
- Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Black Kuhli Loach✅ CompatiblePeaceful · 8 cm · Easy care · 23–28 °C (73–82 °F)
- Both are peaceful, and their water overlaps around 23–28 °C — no size, zone or temperament conflicts.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Black Skirt Tetra✅ CompatibleSemi-aggressive · 6 cm · Easy care · 20–26 °C (68–79 °F)
- Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Black Skirt Tetra in a shoal of 6+ or it gets stressed and nippy.
- Blackline Rasbora✅ CompatiblePeaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
- Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Blackline Rasbora in a shoal of 6+ or it gets stressed and nippy.
- Blood Red Tiger Pleco✅ CompatiblePeaceful · 6 cm · Medium care · 24–29 °C (75–84 °F)
- Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Bolivian Ram✅ CompatiblePeaceful · 8 cm · Medium care · 24–28 °C (75–82 °F)
- Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Bright Diamond Tetra✅ CompatiblePeaceful · 7 cm · Hard care · 24–28 °C (75–82 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Bright Diamond Tetra in a shoal of 8+ or it gets stressed and nippy.
- Butterfly Hillstream Loach✅ CompatiblePeaceful · 6 cm · Hard care · 18–24 °C (64–75 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Celebes Rainbowfish✅ CompatiblePeaceful · 7 cm · Medium care · 22–28 °C (72–82 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Celebes Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Corydoras Catfish✅ CompatiblePeaceful · 6.5 cm · Easy care · 22–26 °C (72–79 °F)
- Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Corydoras Catfish in a shoal of 6+ or it gets stressed and nippy.
- Costa's Tetra✅ CompatiblePeaceful · 7 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Costa's Tetra in a shoal of 6+ or it gets stressed and nippy.
- Croaking Gourami✅ CompatiblePeaceful · 7 cm · Easy care · 24–28 °C (75–82 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Glass Catfish✅ CompatiblePeaceful · 8 cm · Medium care · 23–28 °C (73–82 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Glass Catfish in a shoal of 6+ or it gets stressed and nippy.
- Gold Barb✅ CompatiblePeaceful · 7.5 cm · Easy care · 18–26 °C (64–79 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Gold Barb in a shoal of 6+ or it gets stressed and nippy.
- Peacock Gudgeon✅ CompatiblePeaceful · 7 cm · Medium care · 22–28 °C (72–82 °F)
- Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Peppered Corydoras✅ CompatiblePeaceful · 7 cm · Easy care · 18–26 °C (64–79 °F)
- Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Peppered Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Rio Negro Checkerboard Cichlid✅ CompatiblePeaceful · 7 cm · Hard care · 24–29 °C (75–84 °F)
- Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Rounded Filament Barb✅ CompatiblePeaceful · 7 cm · Medium care · 22–27 °C (72–81 °F)
- Compatible on the things that matter: shared water near 22–27 °C, workable temperaments, and no predator-and-prey size gap.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Rounded Filament Barb in a shoal of 6+ or it gets stressed and nippy.
- Splashing Tetra✅ CompatiblePeaceful · 8 cm · Medium care · 22–28 °C (72–82 °F)
- Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Splashing Tetra in a shoal of 6+ or it gets stressed and nippy.
- Spotfin Corydoras✅ CompatiblePeaceful · 6.5 cm · Easy care · 22–26 °C (72–79 °F)
- Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Spotfin Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Spotted Corydoras✅ CompatiblePeaceful · 7 cm · Easy care · 22–27 °C (72–81 °F)
- Both are peaceful, and their water overlaps around 22–27 °C — no size, zone or temperament conflicts.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Spotted Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Sterbai Corydoras✅ CompatiblePeaceful · 6.5 cm · Medium care · 24–30 °C (75–86 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Sterbai Corydoras in a shoal of 6+ or it gets stressed and nippy.
- African Butterfly Cichlid⚠️ With cautionSemi-aggressive · 8 cm · Medium care · 22–28 °C (72–82 °F)
- African Butterfly Cichlid is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Amazon Puffer⚠️ With cautionPeaceful · 8 cm · Medium care · 23–28 °C (73–82 °F)
- Your 80 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Amazon Puffer in a shoal of 6+ or it gets stressed and nippy.
- Ash Lipped Apisto⚠️ With cautionSemi-aggressive · 7 cm · Hard care · 24–29 °C (75–84 °F)
- Ash Lipped Apisto and Melon Barb are close in size, but the semi-aggressive one tends to dominate — add melon barb in a group to spread the pressure.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Badis⚠️ With cautionSemi-aggressive · 8 cm · Medium care · 22–28 °C (72–82 °F)
- Expect Badis to harass Melon Barb at times; give dense cover and watch them at feeding.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Banded Dwarf Cichlid⚠️ With cautionSemi-aggressive · 7 cm · Medium care · 24–30 °C (75–86 °F)
- Banded Dwarf Cichlid is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Bleeding Heart Tetra⚠️ With cautionSemi-aggressive · 7 cm · Medium care · 23–28 °C (73–82 °F)
- Expect Bleeding Heart Tetra to harass Melon Barb at times; give dense cover and watch them at feeding.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Bleeding Heart Tetra in a shoal of 6+ or it gets stressed and nippy.
- Buenos Aires Tetra⚠️ With cautionSemi-aggressive · 7 cm · Easy care · 18–26 °C (64–79 °F)
- Buenos Aires Tetra is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Buenos Aires Tetra in a shoal of 6+ or it gets stressed and nippy.
- Cockatoo Dwarf Cichlid⚠️ With cautionSemi-aggressive · 8 cm · Medium care · 24–28 °C (75–82 °F)
- Expect Cockatoo Dwarf Cichlid to harass Melon Barb at times; give dense cover and watch them at feeding.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Colombian Tetra⚠️ With cautionSemi-aggressive · 6.5 cm · Easy care · 24–28 °C (75–82 °F)
- Your 80 L tank is below the ~114 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Colombian Tetra in a shoal of 6+ or it gets stressed and nippy.
- Congo Tetra⚠️ With cautionPeaceful · 8 cm · Medium care · 22–28 °C (72–82 °F)
- Your 80 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Congo Tetra in a shoal of 6+ or it gets stressed and nippy.
- Hongsloi Dwarf Cichlid⚠️ With cautionSemi-aggressive · 7 cm · Medium care · 24–29 °C (75–84 °F)
- Hongsloi Dwarf Cichlid and Melon Barb are close in size, but the semi-aggressive one tends to dominate — add melon barb in a group to spread the pressure.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Mahachai Betta⚠️ With cautionAggressive · 7 cm · Medium care · 24–30 °C (75–86 °F)
- Mahachai Betta and Melon Barb are close in size, but the aggressive one tends to dominate — add melon barb in a group to spread the pressure.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Roundtail Paradise Fish⚠️ With cautionSemi-aggressive · 7 cm · Easy care · 10–26 °C (50–79 °F)
- Expect Roundtail Paradise Fish to harass Melon Barb at times; give dense cover and watch them at feeding.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Sumo Loach⚠️ With cautionSemi-aggressive · 7 cm · Medium care · 22–26 °C (72–79 °F)
- Sumo Loach is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Tiger Barb⚠️ With cautionSemi-aggressive · 7 cm · Easy care · 22–28 °C (72–82 °F)
- Tiger Barb is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
- Your 80 L tank is below the ~95 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Keep Tiger Barb in a shoal of 6+ or it gets stressed and nippy.
- Umbrella Dwarf Cichlid⚠️ With cautionSemi-aggressive · 7 cm · Medium care · 20–26 °C (68–79 °F)
- Expect Umbrella Dwarf Cichlid to harass Melon Barb at times; give dense cover and watch them at feeding.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Alligator Gar⛔ Not recommendedAggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
- Alligator Gar (250 cm) is big enough to swallow the 7 cm Melon Barb whole.
- Expect Alligator Gar to harass Melon Barb at times; give dense cover and watch them at feeding.
- Your 80 L tank is below the ~3785 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Clown Knifefish⛔ Not recommendedAggressive · 90 cm · Hard care · 24–28 °C (75–82 °F)
- Size gap is too large (90 vs 7 cm): Clown Knifefish will treat Melon Barb as food.
- Clown Knifefish is aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
- Your 80 L tank is below the ~750 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Fire Eel⛔ Not recommendedSemi-aggressive · 100 cm · Medium care · 24–28 °C (75–82 °F)
- Fire Eel (100 cm) is big enough to swallow the 7 cm Melon Barb whole.
- Fire Eel clearly outsizes Melon Barb and is semi-aggressive; risky unless the tank is big and well-planted.
- Your 80 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Koi⛔ Not recommendedPeaceful · 90 cm · Medium care · 4–28 °C (39–82 °F)
- Koi (90 cm) is big enough to swallow the 7 cm Melon Barb whole.
- Your 80 L tank is below the ~3800 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Redtail Catfish⛔ Not recommendedAggressive · 120 cm · Hard care · 24–27 °C (75–81 °F)
- Redtail Catfish (120 cm) is big enough to swallow the 7 cm Melon Barb whole.
- Redtail Catfish clearly outsizes Melon Barb and is aggressive; risky unless the tank is big and well-planted.
- Your 80 L tank is below the ~5700 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Spotted Gar⛔ Not recommendedAggressive · 90 cm · Hard care · 18–26 °C (64–79 °F)
- Spotted Gar (90 cm) is big enough to swallow the 7 cm Melon Barb whole.
- Expect Spotted Gar to harass Melon Barb at times; give dense cover and watch them at feeding.
- Your 80 L tank is below the ~600 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Wels Catfish⛔ Not recommendedAggressive · 300 cm · Hard care · 15–25 °C (59–77 °F)
- Size gap is too large (300 vs 7 cm): Wels Catfish will treat Melon Barb as food.
- Wels Catfish clearly outsizes Melon Barb and is aggressive; risky unless the tank is big and well-planted.
- Your 80 L tank is below the ~20000 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
- Wolf Cichlid⛔ Not recommendedAggressive · 72 cm · Hard care · 24–30 °C (75–86 °F)
- Wolf Cichlid (72 cm) is big enough to swallow the 7 cm Melon Barb whole.
- Expect Wolf Cichlid to harass Melon Barb at times; give dense cover and watch them at feeding.
- Your 80 L tank is below the ~760 L this pairing really wants — crowding raises aggression.
- Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
Compatibility is computed from each species' care data — a strong starting point, not a guarantee. Individual temperament varies, so always introduce new fish slowly and watch them.
Melon Barb care specs
- Care level
- Easy
- Breeding
- Medium
- Max size
- 7 cm (2.8 in)
- Min tank size
- 80 L (21.1 gal)
- Temperature
- 22–28 °C (72–82 °F)
- pH
- 6–7.5
- Hardness
- 4–15 dGH
- Lifespan
- 3–5 years
- Diet
- Omnivore
- Swim level
- Middle
- Group size
- 8+ (shoaling)
- Family
- Cyprinidae
- Origin
- India — Western Ghats hill streams (Karnataka, Kerala, Tamil Nadu)
What is a Melon Barb?
The Melon Barb (Haludaria fasciata) is a small, energetic cyprinid native to the fast-flowing hill streams of India’s Western Ghats. Adults reach up to 7 cm (2.75 in), and the species packs a striking amount of colour into that compact frame: a rosy-pink to silvery base is crossed by three to four bold black vertical bars, while the fins flash vivid orange-red edged in black. The common name nods to the fish’s rounded, melon-like body profile; the trade name “Panda Barb” nods to the high-contrast black-and-white patterning.
Haludaria fasciata was previously placed in the genus Barbus (hence the synonyms Barbus fasciatus and Barbus melanampyx) before being reassigned to the monotypic genus Haludaria. The species is classified as a threatened endemic in India due to habitat degradation in its native streams, which makes responsibly sourced captive-bred stock the preferred choice.
In the home aquarium the Melon Barb is a rewarding, low-maintenance fish: hardy, visually bold, peaceful toward most tankmates, and genuinely fun to watch as a school twists and turns through open water. Care level is easy, making it suitable for fishkeepers who have a basic understanding of the nitrogen cycle and community tank stocking.
Where does the Melon Barb come from?
Wild Melon Barbs are endemic to the Western Ghats mountain range of peninsular India — specifically the hill streams of Karnataka, Kerala, and Tamil Nadu. These fast-flowing, well-oxygenated streams run over rocky and sandy substrates, are often shaded by forest canopy, and carry soft, slightly acidic to neutral water that is noticeably cooler than the lowland rivers more commonly associated with tropical fish.
Understanding this origin is directly useful for setting up a tank. The species thrives with moderate-to-good current, high dissolved oxygen, dappled low-to-moderate lighting, and water chemistry that is soft to moderately hard. Replicating those conditions — even approximately — produces a school that is visually at its best and far less prone to stress-related illness.
What size tank do Melon Barbs need?
A minimum of 80 litres (21 gal) is needed to house a school of eight Melon Barbs, which is the smallest group that allows the fish to express natural schooling behaviour and maintain stable social dynamics. In practice, a 120-litre (32-gal) footprint or larger is preferable: it accommodates a bigger school, provides more swimming room for these active mid-water fish, and gives more margin when mixing with other community species.
Tank shape matters as much as volume. Melon Barbs are horizontal swimmers — a long, low tank gives more usable mid-water space than a tall, narrow one of equivalent volume. Aim for at least 80 cm (31 in) of front-to-back swimming lane.
For the scape, replicate the hill-stream feel: a sand or fine-gravel substrate, smooth river stones or slate, driftwood for structure and mild tannins, and a generous planting of hardy species (Java fern, Anubias, Vallisneria, Cryptocoryne) along the sides and back. Leave the central two-thirds of the tank open for swimming. A powerhead or spray bar creating a gentle-to-moderate current across the tank will be used and appreciated. A secure lid is worthwhile — active barbs can jump when startled.
What water parameters do Melon Barbs need?
- Temperature: 22–28 °C (72–82 °F). The cooler end reflects their hill-stream origin and is fine for most community mixes.
- pH: 6.0–7.5. Soft to neutral water is ideal; avoid anything strongly alkaline.
- Hardness: 4–15 dGH. Moderately soft to moderately hard; very hard tap water should be cut with RO or rainwater.
Stability is more important than precision. Keep up with 25–30% weekly water changes and run a reliable filter — a school of eight or more produces meaningful waste and will show it in colour and vitality if water quality slips. An air stone or surface agitation helps meet their preference for well-oxygenated water.
What do Melon Barbs eat?
Melon Barbs are omnivores with an active metabolism that benefits from a varied diet. A high-quality micro-pellet or small flake forms a practical staple; rotating with small live or frozen foods — daphnia, baby brine shrimp, bloodworm, and Cyclops — keeps colours vibrant and encourages natural foraging behaviour. They will also graze on soft algae and nibble at blanched vegetables such as spinach or courgette, though plant matter is a supplement rather than a staple.
Feed small amounts twice a day, removing any uneaten food after two to three minutes. Their active lifestyle means they are not prone to obesity, but overfeeding still degrades water quality quickly in a school-sized tank. Varied feeding also supports the colour development that makes this species so appealing — fish kept on single-food diets tend to fade over time.
How do Melon Barbs behave, and what fish can live with them?
Melon Barbs are peaceful, active mid-water schoolers. Within the school there is a loose pecking order with some chasing between males, but this is rarely damaging and serves mainly as display behaviour. Toward other species, they are notably more tolerant than Tiger Barbs — provided companions are short-finned and similarly sized.
Their main compatibility caveat is fin-nipping. Long, flowing fins on slow-moving fish (bettas, angelfish, fancy guppies, fancy goldfish) are a temptation that this species will sometimes act on. Keep them with active, short-finned community fish of comparable size. Good tankmates include:
- Other barbs — Cherry Barb, Odessa Barb, Rosy Barb
- Rasboras — Harlequin Rasbora, Lambchop Rasbora
- Danios — Zebra Danio, Pearl Danio
- Corydoras catfish (any common species)
- Loaches — Kuhli Loach, Yo-yo Loach
- Livebearers with short fins — Platy, short-finned Molly
Avoid very small fish that could be intimidated by the school’s constant activity, and anything with flowing finnage.
For a full breakdown of compatible and incompatible species, see Melon Barb tank mates.
How do you tell male from female Melon Barbs?
Sexing Melon Barbs is straightforward in adult fish. Males carry deeper, more saturated orange-red colouration on the fins and often show a brighter rosy flush to the body; the black bar markings can appear crisper and more contrasting as well. Females are generally paler overall — the fin colouration is washed out compared to males — and have a noticeably deeper, rounder belly, most evident when a female is in spawning condition and carrying eggs.
Juveniles are difficult to sex reliably until they reach roughly 3–4 cm and begin to mature. When purchasing, a mixed group from a well-stocked tank will almost always contain both sexes naturally. If you intend to breed, a slight bias toward more females than males reduces harassment of individual females during spawning drives.
How do Melon Barbs breed?
Melon Barbs are egg-scatterers that spawn among fine-leaved plants and do not guard eggs or fry. In a well-maintained community tank, occasional spawning may occur spontaneously without intervention, though eggs and fry rarely survive alongside adult fish.
For deliberate breeding, set up a dedicated 40–60 L breeding tank with a layer of fine-leaved plants (Java moss, hornwort, spawning mops) and bare or pebbled substrate to protect eggs from adults. Condition a group of well-fed adults with live or frozen foods for one to two weeks, then move a trio (one female, two males) or a small group to the breeding tank in the evening. Spawning typically occurs in the morning, with males driving females through the plants as eggs are scattered and fertilised. Remove adults promptly after spawning is complete, as they will eat eggs given the opportunity.
Eggs hatch in 24–48 hours at 26 °C (79 °F). Free-swimming fry appear two to three days later and can be fed infusoria or commercial liquid fry food initially, transitioning to baby brine shrimp nauplii and microworms as they grow. Water quality management is critical in the fry tank — small, frequent water changes avoid ammonia spikes without chilling the fry.
What diseases affect Melon Barbs?
Melon Barbs are hardy and not unusually prone to disease, but the usual freshwater ailments apply:
- Ich (white spot): Small white grains on the body and fins, scratching behaviour. Almost always introduced by new fish or plants; prevented by a proper quarantine period for all new arrivals.
- Fin rot: Ragged or receding fin edges, often with a whitish margin. A water-quality problem first and foremost — address the cause before anything else.
- Velvet (Oodinium): A fine golden or rust-coloured dust on the body, often noticed first in raking light. Infectious and fast-moving; quarantine is the primary prevention.
- Bacterial infections / dropsy: Raised scales or bloating. Usually secondary to stress from poor water conditions or injury.
Prevention rests on three habits: maintain stable, clean water through consistent water changes and adequate filtration; quarantine all new fish for at least two to three weeks before adding them to the display tank; and avoid sudden temperature swings or overcrowding that stress the immune system.
Health note: specific medication dosing and formal disease diagnosis are beyond the scope of a care profile. If fish are showing symptoms, confirm identification against a reputable veterinary or fish-health source before beginning any treatment course.
How long do Melon Barbs live?
With good care, Melon Barbs live 3–5 years. They are relatively long-lived for a small barb of this size, and fish kept in stable conditions with varied diet and a large enough school consistently reach the upper end of that range.
The biggest factor in longevity is simply consistent husbandry: stable water chemistry, regular water changes, and the social security of a proper group of eight or more. Isolated fish or fish kept in poor conditions tend toward shorter lifespans and chronic stress colouration — pale, washed-out fish that never show their full orange-red brilliance. Give them the right conditions and a Melon Barb school is one of the most visually rewarding displays a community freshwater tank can offer.
Frequently asked questions
Is the Melon Barb the same as the Panda Barb?
Yes — Haludaria fasciata is sold under both names, as well as Ember Barb. The "Panda Barb" label is also applied to Haludaria fasciata in most of the trade; occasionally it appears on unrelated species, so always check the scientific name when purchasing.
Can Melon Barbs be kept with long-finned fish?
It is best avoided. Like most barbs, Melon Barbs are active swimmers and may nip at long, flowing fins — angelfish, fancy guppies, and bettas make poor companions. Stick to short-finned, similarly-sized community fish.
What you need to keep a melon barb
The baseline is a heated, filtered 80 L+ tank: a reliable heater to hold 22–28 °C (72–82 °F), a gentle filter that won't batter a melon barb in the current, and a tight-fitting lid. Cycle the tank fully before adding any fish.
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