Photo: AquariaNR (CC BY-SA 3.0 de) — via Wikimedia Commons
Tail-spot Corydoras (Corydoras hastatus)
A tiny, active mid-water shoaler that brings the charm of corydoras to the smallest nano tanks.
Will it live with a Tail-spot Corydoras?
We compare each fish against your tail-spot corydoras on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- Assassin Snail✅ CompatiblePeaceful · 3 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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Blackwing Hatchetfish✅ CompatiblePeaceful · 3.5 cm · Medium care · 23–28 °C (73–82 °F)
- Compatible on the things that matter: shared water near 23–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Blackwing Hatchetfish in a shoal of 6+ or it gets stressed and nippy.
- Cherry Shrimp✅ CompatiblePeaceful · 3 cm · Easy care · 18–28 °C (64–82 °F)
- Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Cherry Shrimp in a shoal of 10+ or it gets stressed and nippy.
- Clown Killifish✅ CompatiblePeaceful · 3.5 cm · Medium 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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Clown Killifish in a shoal of 6+ or it gets stressed and nippy.
- Crimson Red Betta✅ CompatiblePeaceful · 3.5 cm · Hard care · 24–29 °C (75–84 °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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Crystal Red Shrimp✅ CompatiblePeaceful · 2.5 cm · Hard care · 20–24 °C (68–75 °F)
- Compatible on the things that matter: shared water near 22–24 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Crystal Red Shrimp in a shoal of 10+ or it gets stressed and nippy.
- Dawn Tetra✅ CompatiblePeaceful · 2.5 cm · Easy 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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Dawn Tetra in a shoal of 8+ or it gets stressed and nippy.
- Dwarf Spotted Rasbora✅ CompatiblePeaceful · 2.5 cm · Medium care · 23–28 °C (73–82 °F)
- Both are peaceful, and their water overlaps around 23–28 °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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Dwarf Spotted Rasbora in a shoal of 8+ or it gets stressed and nippy.
- Endler's Livebearer✅ CompatiblePeaceful · 3 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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Endler's Livebearer in a shoal of 6+ or it gets stressed and nippy.
- Eyespot Rasbora✅ CompatiblePeaceful · 3.5 cm · Medium care · 20–25 °C (68–77 °F)
- Compatible on the things that matter: shared water near 22–25 °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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Eyespot Rasbora in a shoal of 8+ or it gets stressed and nippy.
- Fire Red Licorice Gourami✅ CompatiblePeaceful · 3.5 cm · Hard care · 23–28 °C (73–82 °F)
- Both are peaceful, and their water overlaps around 23–28 °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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Glowlight Danio✅ CompatiblePeaceful · 3 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.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Glowlight Danio in a shoal of 8+ or it gets stressed and nippy.
- Glowlight Rasbora✅ CompatiblePeaceful · 3.5 cm · Easy care · 23–28 °C (73–82 °F)
- Compatible on the things that matter: shared water near 23–28 °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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Glowlight Rasbora in a shoal of 8+ or it gets stressed and nippy.
- Gold Ring Danio✅ CompatiblePeaceful · 3 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.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Gold Ring Danio in a shoal of 8+ or it gets stressed and nippy.
- Green Neon Tetra✅ CompatiblePeaceful · 2.5 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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Green Neon Tetra in a shoal of 8+ or it gets stressed and nippy.
- Lambchop Rasbora✅ CompatiblePeaceful · 3 cm · Medium care · 23–28 °C (73–82 °F)
- Compatible on the things that matter: shared water near 23–28 °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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Lambchop Rasbora in a shoal of 6+ or it gets stressed and nippy.
- Malaysian Trumpet Snail✅ CompatiblePeaceful · 3 cm · Easy care · 21–27 °C (70–81 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Neon Blue Rasbora✅ CompatiblePeaceful · 2.5 cm · Medium care · 23–26 °C (73–79 °F)
- Both are peaceful, and their water overlaps around 23–26 °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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Neon Blue Rasbora in a shoal of 10+ or it gets stressed and nippy.
- Neon Tetra✅ CompatiblePeaceful · 3 cm · Easy care · 20–26 °C (68–79 °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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Neon Tetra in a shoal of 6+ or it gets stressed and nippy.
- Northern Glowlight Danio✅ CompatiblePeaceful · 3.5 cm · Medium 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.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Northern Glowlight Danio in a shoal of 8+ or it gets stressed and nippy.
- Pygmy Corydoras✅ CompatiblePeaceful · 3.2 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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Pygmy Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Tailspotted Oto✅ CompatiblePeaceful · 3.5 cm · Medium care · 22–27 °C (72–81 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Tailspotted Oto in a shoal of 6+ or it gets stressed and nippy.
- Tiger Shrimp✅ CompatiblePeaceful · 3 cm · Hard care · 20–25 °C (68–77 °F)
- Compatible on the things that matter: shared water near 22–25 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Tiger Shrimp in a shoal of 6+ or it gets stressed and nippy.
- Trinidad Guppy✅ CompatiblePeaceful · 3 cm · Easy care · 19–24 °C (66–75 °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 Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Black Darter Tetra⚠️ With cautionSemi-aggressive · 4 cm · Hard care · 21–28 °C (70–82 °F)
- Black Darter Tetra is semi-aggressive and may chase or nip the smaller Tail-spot Corydoras — plant heavily and break up sight lines.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Black Ruby Barb⚠️ With cautionSemi-aggressive · 6 cm · Easy care · 22–26 °C (72–79 °F)
- Expect Black Ruby Barb to harass Tail-spot Corydoras at times; give dense cover and watch them at feeding.
- Your 75 L tank is below the ~100 L this pairing really wants — crowding raises aggression.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Black Ruby Barb in a shoal of 6+ or it gets stressed and nippy.
- Black Skirt Tetra⚠️ With cautionSemi-aggressive · 6 cm · Easy care · 20–26 °C (68–79 °F)
- Black Skirt Tetra is semi-aggressive and may chase or nip the smaller Tail-spot Corydoras — plant heavily and break up sight lines.
- Keep Tail-spot Corydoras 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.
- Desert Goby⚠️ With cautionSemi-aggressive · 6 cm · Easy care · 18–28 °C (64–82 °F)
- Desert Goby clearly outsizes Tail-spot Corydoras and is semi-aggressive; risky unless the tank is big and well-planted.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Dwarf Chain Loach⚠️ With cautionPeaceful · 6 cm · Medium care · 24–29 °C (75–84 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Dwarf Chain Loach in a shoal of 6+ or it gets stressed and nippy.
- Eastern Betta⚠️ With cautionSemi-aggressive · 6 cm · Medium care · 24–28 °C (75–82 °F)
- Eastern Betta clearly outsizes Tail-spot Corydoras and is semi-aggressive; risky unless the tank is big and well-planted.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- GloFish Tetra⚠️ With cautionSemi-aggressive · 6 cm · Easy care · 21–28 °C (70–82 °F)
- GloFish Tetra is semi-aggressive and may chase or nip the smaller Tail-spot Corydoras — plant heavily and break up sight lines.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep GloFish Tetra in a shoal of 6+ or it gets stressed and nippy.
- Humpbacked Tetra⚠️ With cautionSemi-aggressive · 5 cm · Hard care · 24–28 °C (75–82 °F)
- Expect Humpbacked Tetra to harass Tail-spot Corydoras at times; give dense cover and watch them at feeding.
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Humpbacked Tetra in a shoal of 8+ or it gets stressed and nippy.
- Morse Code Corydoras⚠️ With cautionPeaceful · 5 cm · Medium care · 23–26 °C (73–79 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Morse Code Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Rainbow Emperor Tetra⚠️ With cautionSemi-aggressive · 3.6 cm · Medium care · 22–28 °C (72–82 °F)
- Expect Rainbow Emperor Tetra to harass Tail-spot Corydoras at times; give dense cover and watch them at feeding.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Rainbow Emperor Tetra in a shoal of 8+ or it gets stressed and nippy.
- Serpae Tetra⚠️ With cautionSemi-aggressive · 4 cm · Easy care · 23–28 °C (73–82 °F)
- Serpae Tetra is semi-aggressive and may chase or nip the smaller Tail-spot Corydoras — plant heavily and break up sight lines.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Serpae Tetra in a shoal of 6+ or it gets stressed and nippy.
- Silvertip Tetra⚠️ With cautionSemi-aggressive · 5 cm · Easy care · 22–28 °C (72–82 °F)
- Silvertip Tetra is semi-aggressive and may chase or nip the smaller Tail-spot Corydoras — plant heavily and break up sight lines.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Keep Silvertip Tetra in a shoal of 6+ or it gets stressed and nippy.
- Spotfin Betta⚠️ With cautionSemi-aggressive · 5 cm · Medium care · 23–28 °C (73–82 °F)
- Expect Spotfin Betta to harass Tail-spot Corydoras at times; give dense cover and watch them at feeding.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Striped Red-Eye Puffer⚠️ With cautionAggressive · 5 cm · Hard care · 24–28 °C (75–82 °F)
- Striped Red-Eye Puffer is aggressive and may chase or nip the smaller Tail-spot Corydoras — plant heavily and break up sight lines.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Tiger Badis⚠️ With cautionSemi-aggressive · 4 cm · Medium care · 22–24 °C (72–75 °F)
- Tiger Badis is semi-aggressive and may chase or nip the smaller Tail-spot Corydoras — plant heavily and break up sight lines.
- Keep Tail-spot Corydoras in a shoal of 8+ or it gets stressed and nippy.
- Wine Red Betta⚠️ With cautionAggressive · 5 cm · Medium care · 24–28 °C (75–82 °F)
- Wine Red Betta is aggressive and may chase or nip the smaller Tail-spot Corydoras — plant heavily and break up sight lines.
- Keep Tail-spot Corydoras 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.
Tail-spot Corydoras care specs
- Care level
- Easy
- Breeding
- Medium
- Max size
- 3 cm (1.2 in)
- Min tank size
- 38 L (10 gal)
- Temperature
- 22–28 °C (72–82 °F)
- pH
- 6–7.5
- Hardness
- 2–12 dGH
- Lifespan
- 3–5 years
- Diet
- Omnivore
- Swim level
- Middle
- Group size
- 8+ (shoaling)
- Family
- Callichthyidae
- Origin
- South America — Paraguay basin, central Amazon tributaries (Brazil, Bolivia)
What is a Tail-spot Corydoras?
The tail-spot corydoras (Corydoras hastatus) is one of the smallest members of the armoured catfish family, reaching just 3 cm (1.2 in) as an adult. Unlike the floor-hugging behaviour most keepers associate with corydoras, C. hastatus spends the majority of its time in open mid-water, hovering and darting in tight formation with its shoal-mates. The common name comes from a bold black spot at the caudal peduncle, edged in white, that catches the light with every flick of the tail. Against a planted background, a school of twelve or more produces a shimmering, almost hypnotic display — which is why this species has become a firm favourite for nano aquariums and densely planted community tanks.
Where do Tail-spot Corydoras come from in the wild?
Wild Corydoras hastatus are native to the Paraguay basin and central Amazon tributaries in Brazil and Bolivia. Their habitat is slow-moving, densely vegetated backwaters — shallow floodplain pools and forest streams with warm, soft, tannin-stained water, gentle currents and abundant submerged plants. The mid-water schooling behaviour makes sense in this context: a tight, fast-moving shoal in open water is an effective anti-predator strategy in low-visibility, predator-rich environments. Most fish in the trade today are captive-bred, making them somewhat more adaptable, but water that mirrors their native conditions — soft, slightly acidic, warm — brings out the best colour and behaviour.
What tank size and setup do Tail-spot Corydoras need?
The minimum is 38 litres (10 gallons), driven not by the size of the fish but by the need to house at least eight together. A longer, shallower footprint (60 cm / 24 in or more) is preferable to a tall tank, as the species uses horizontal space rather than vertical depth. Dense planting with stem plants, Java fern and floating cover replicates their natural environment and gives the shoal structure to move through. Fine sand or small rounded gravel suits the occasional substrate-sifting they still do. Filtration should produce gentle flow — a sponge filter or canister with a spray bar works well. Fit a lid; active, small fish occasionally jump when startled.
What water parameters do Tail-spot Corydoras need?
- Temperature: 22–28 °C (72–82 °F); mid-range around 24–26 °C (75–79 °F) is ideal.
- pH: 6.0–7.5 — slightly acidic to neutral.
- Hardness: 2–12 dGH — soft to moderately hard.
- Ammonia / Nitrite: zero, always. A fully cycled tank is essential.
- Nitrate: below 20 ppm, maintained by weekly water changes of 20–25%.
Stability matters more than hitting precise numbers. Gradual, predictable conditions are what corydoras thrive in; sudden swings in temperature or pH are more damaging than water sitting at the outer edge of the acceptable range.
What do Tail-spot Corydoras eat?
C. hastatus are omnivores that in the wild consume small invertebrates, zooplankton, algae and organic debris. Their small mouths mean food size matters. A practical diet includes:
- Micro pellets or mini sinking wafers — standard corydoras wafers are often too large to be taken efficiently.
- Frozen or live micro foods — baby brine shrimp, micro worms and Daphnia are eagerly taken and improve conditioning.
- High-quality micro flake — accepted from the mid-water column before it sinks.
Feed small amounts once or twice daily. Some food should be allowed to reach the substrate, as the fish do descend to scavenge. Variety over time keeps the shoal in good condition and supports breeding readiness.
How do Tail-spot Corydoras behave, and what fish are compatible?
C. hastatus are fully peaceful and never pose a threat to tank-mates. Their defining trait is tight mid-water shoaling — a group of twelve or more moves in near-perfect synchrony, wheeling and hovering in a way that is genuinely striking in a planted tank. Fewer than eight fish produces shy, scattered individuals that rarely show the activity the species is known for.
Good tank-mates share similar water parameters and a calm temperament: small tetras (ember, neon, rummy nose), rasboras, micro danios and dwarf gouramis all work well. Avoid anything large enough to treat a 3 cm fish as food, aggressive feeders that dominate mealtimes, or species requiring hard alkaline water outside this species’ range.
For a full compatibility list, see Tail-spot Corydoras tank mates.
How do you tell male from female Tail-spot Corydoras?
Sexing is straightforward in adult fish. Females are noticeably plumper through the belly and appear distinctly wider than males when viewed from directly above — a difference that becomes obvious when females are conditioned for breeding. Males are slimmer and more streamlined. There is no meaningful difference in fin shape or colouration between the sexes. The overhead view is the most reliable method; looking through the glass head-on makes the difference easier to miss.
How do Tail-spot Corydoras breed?
Breeding follows the broad corydoras pattern. Condition a group — ideally with more males than females — on varied live and frozen micro foods over several weeks. A partial water change with slightly cooler water (dropping 2–3 °C) commonly triggers spawning, mimicking the onset of seasonal rains. During spawning the female applies sperm to eggs held in her cupped ventral fins, depositing small batches on plant leaves or the tank glass in the mid-column rather than on the substrate. Eggs are not guarded and will be eaten, so transfer them to a small, well-oxygenated hatching container if yield matters. Fry hatch in three to five days and require infusoria or commercial first-foods before graduating to baby brine shrimp nauplii. Water quality in the fry container must be excellent.
What diseases commonly affect Tail-spot Corydoras?
- Ich (white spot): Triggered by temperature drops or unquarantined new arrivals. Prevention: quarantine all new fish for two to four weeks; maintain stable, warm water.
- Bacterial infections / barbel erosion: Almost always linked to poor substrate hygiene or elevated nitrites. Keep the substrate clean and nitrates low.
- Fungal infections: Opportunistic on damaged or stressed fish; good water quality is the primary preventive.
The most effective disease-prevention strategy for this species is consistent water maintenance, a smooth substrate and not skipping quarantine.
Health note: medication dosing and disease diagnosis are beyond the scope of a care profile. For sick fish, confirm symptoms against a reputable veterinary or fish-health source before medicating — and note that some medications tolerated by scaled fish can harm thin-scaled catfish.
How long do Tail-spot Corydoras live?
A well-kept C. hastatus lives 3–5 years. Lifespan is closely tied to water quality, diet variety and — critically — shoal size. Fish kept in undersized groups in poor conditions rarely reach their potential; those in a stable, planted tank with a full group of twelve or more, clean water and consistent feeding routinely hit the upper end of the range and often breed along the way.
Frequently asked questions
Why do tail-spot corydoras swim in the middle of the tank instead of the bottom?
Unlike most corydoras, C. hastatus is naturally a mid-water shoaler that hovers and darts through open water. It still scavenges the substrate for food, but do not be surprised to see the whole school suspended mid-tank — that is normal behaviour, not distress.
How many tail-spot corydoras should I keep?
A minimum of eight, and twelve or more is strongly preferred. Small numbers leave them nervous and skittish; a proper shoal brings out confident, active behaviour and nearly constant movement across the water column.
What you need to keep a tail-spot corydoras
The baseline is a heated, filtered 38 L+ tank: a reliable heater to hold 22–28 °C (72–82 °F), a gentle filter that won't batter a tail-spot corydoras in the current, and a tight-fitting lid. Cycle the tank fully before adding any fish.
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