Photo: Frank M. Greco, CC BY 3.0 — via Wikimedia Commons
Tiger Otocinclus (Otocinclus cocama)
A boldly striped nano algae-eater from Peru that scrubs glass and plants while staying small enough for a 40-litre tank.
Will it live with a Tiger Otocinclus?
We compare each fish against your tiger otocinclus on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- African Dwarf Frog✅ CompatiblePeaceful · 4 cm · Medium 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 bottom of the tank — offer enough cover so they aren't always in each other's space.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Amapá Tetra✅ CompatiblePeaceful · 4 cm · Medium care · 24–27 °C (75–81 °F)
- Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Amapá Tetra in a shoal of 6+ or it gets stressed and nippy.
- Black Darter Tetra✅ CompatibleSemi-aggressive · 4 cm · Hard care · 21–28 °C (70–82 °F)
- Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 22–27 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Blue Danio✅ CompatiblePeaceful · 4 cm · Easy care · 21–26 °C (70–79 °F)
- Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Blue Danio in a shoal of 6+ or it gets stressed and nippy.
- Blue Emperor Tetra✅ CompatiblePeaceful · 4 cm · Medium care · 23–27 °C (73–81 °F)
- Both are peaceful, and their water overlaps around 23–27 °C — no size, zone or temperament conflicts.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Blue Emperor Tetra in a shoal of 6+ or it gets stressed and nippy.
- Cardinal Tetra✅ CompatiblePeaceful · 4 cm · Medium care · 23–27 °C (73–81 °F)
- Both are peaceful, and their water overlaps around 23–27 °C — no size, zone or temperament conflicts.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Cardinal Tetra in a shoal of 6+ or it gets stressed and nippy.
- Emperor Tetra✅ CompatiblePeaceful · 4 cm · Easy care · 23–27 °C (73–81 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Emperor Tetra in a shoal of 6+ or it gets stressed and nippy.
- Flame Tetra✅ CompatiblePeaceful · 4 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful, and their water overlaps around 22–27 °C — no size, zone or temperament conflicts.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Flame Tetra in a shoal of 6+ or it gets stressed and nippy.
- Ghost Shrimp✅ CompatiblePeaceful · 4 cm · Easy care · 18–28 °C (64–82 °F)
- Both are peaceful, and their water overlaps around 22–27 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Ghost Shrimp in a shoal of 6+ or it gets stressed and nippy.
- Glowlight Tetra✅ CompatiblePeaceful · 4 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.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Glowlight Tetra in a shoal of 6+ or it gets stressed and nippy.
- Golden Dwarf Barb✅ CompatiblePeaceful · 4 cm · Easy 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 Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Golden Dwarf Barb in a shoal of 6+ or it gets stressed and nippy.
- Jelly Bean Tetra✅ CompatiblePeaceful · 4 cm · Medium care · 20–26 °C (68–79 °F)
- Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Jelly Bean Tetra in a shoal of 10+ or it gets stressed and nippy.
- Marbled Hatchetfish✅ CompatiblePeaceful · 4 cm · Medium care · 23–28 °C (73–82 °F)
- Compatible on the things that matter: shared water near 23–27 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Marbled Hatchetfish in a shoal of 6+ or it gets stressed and nippy.
- Otocinclus✅ CompatiblePeaceful · 4 cm · Medium care · 21–26 °C (70–79 °F)
- Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Phoenix Tetra✅ CompatiblePeaceful · 4 cm · Easy care · 23–28 °C (73–82 °F)
- Compatible on the things that matter: shared water near 23–27 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Phoenix Tetra in a shoal of 8+ or it gets stressed and nippy.
- Purple Tetra✅ CompatiblePeaceful · 4 cm · Medium 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 Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Purple Tetra in a shoal of 8+ or it gets stressed and nippy.
- Red Phantom Tetra✅ CompatiblePeaceful · 4 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.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Red Phantom Tetra in a shoal of 8+ or it gets stressed and nippy.
- Rosy Tetra✅ CompatiblePeaceful · 4 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful, and their water overlaps around 22–27 °C — no size, zone or temperament conflicts.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Rosy Tetra in a shoal of 6+ or it gets stressed and nippy.
- Rummy Nose Rasbora✅ CompatiblePeaceful · 4 cm · Medium 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.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Rummy Nose Rasbora in a shoal of 8+ or it gets stressed and nippy.
- Serpae Tetra✅ CompatibleSemi-aggressive · 4 cm · Easy care · 23–28 °C (73–82 °F)
- Compatible on the things that matter: shared water near 23–27 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Serpae Tetra in a shoal of 6+ or it gets stressed and nippy.
- Sparkling Gourami✅ CompatiblePeaceful · 4 cm · Medium care · 24–28 °C (75–82 °F)
- Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Strawberry Betta✅ CompatiblePeaceful · 4 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 Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Threadfin Rainbowfish✅ CompatiblePeaceful · 4 cm · Medium care · 24–28 °C (75–82 °F)
- Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Threadfin Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Tiger Badis✅ CompatibleSemi-aggressive · 4 cm · Medium care · 22–24 °C (72–75 °F)
- Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 22–24 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Keep Tiger Otocinclus 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)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Amazon Puffer⚠️ With cautionPeaceful · 8 cm · Medium care · 23–28 °C (73–82 °F)
- Your 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ 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)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Black Ruby Barb⚠️ With cautionSemi-aggressive · 6 cm · Easy care · 22–26 °C (72–79 °F)
- Your 75 L tank is below the ~100 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Black Ruby Barb in a shoal of 6+ or it gets stressed and nippy.
- Bleeding Heart Tetra⚠️ With cautionSemi-aggressive · 7 cm · Medium care · 23–28 °C (73–82 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Bleeding Heart Tetra in a shoal of 6+ or it gets stressed and nippy.
- Bright Diamond Tetra⚠️ With cautionPeaceful · 7 cm · Hard care · 24–28 °C (75–82 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Bright Diamond Tetra in a shoal of 8+ or it gets stressed and nippy.
- Buenos Aires Tetra⚠️ With cautionSemi-aggressive · 7 cm · Easy care · 18–26 °C (64–79 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Buenos Aires Tetra in a shoal of 6+ or it gets stressed and nippy.
- Colombian Tetra⚠️ With cautionSemi-aggressive · 6.5 cm · Easy care · 24–28 °C (75–82 °F)
- Your 75 L tank is below the ~114 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ 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 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Congo Tetra in a shoal of 6+ 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 Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Dwarf Chain Loach in a shoal of 6+ or it gets stressed and nippy.
- Glass Catfish⚠️ With cautionPeaceful · 8 cm · Medium care · 23–28 °C (73–82 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Glass Catfish 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)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Humpbacked Tetra in a shoal of 8+ or it gets stressed and nippy.
- Melon Barb⚠️ With cautionPeaceful · 7 cm · Easy care · 22–28 °C (72–82 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Melon Barb 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 Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Morse Code Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Rounded Filament Barb⚠️ With cautionPeaceful · 7 cm · Medium care · 22–27 °C (72–81 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Rounded Filament Barb in a shoal of 6+ or it gets stressed and nippy.
- Tiger Barb⚠️ With cautionSemi-aggressive · 7 cm · Easy care · 22–28 °C (72–82 °F)
- Your 75 L tank is below the ~95 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Tiger Barb in a shoal of 6+ or it gets stressed and nippy.
- Discus⛔ Not recommendedPeaceful · 20 cm · Hard care · 28–31 °C (82–88 °F)
- Temperature needs don't overlap (Tiger Otocinclus 22–27 °C vs Discus 28–31 °C).
- Your 75 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
- Keep Tiger Otocinclus in a shoal of 6+ or it gets stressed and nippy.
- Keep Discus in a shoal of 6+ 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.
Tiger Otocinclus care specs
- Care level
- Medium
- Breeding
- Hard
- Max size
- 4 cm (1.6 in)
- Min tank size
- 40 L (10.6 gal)
- Temperature
- 22–27 °C (72–81 °F)
- pH
- 6–7.5
- Hardness
- 2–12 dGH
- Lifespan
- 3–5 years
- Diet
- Herbivore
- Swim level
- Bottom
- Group size
- 6+ (shoaling)
- Family
- Loricariidae
- Origin
- South America — upper Amazon basin, Peru (Rio Ucayali and tributaries)
What is a Tiger Otocinclus?
The Tiger Otocinclus (Otocinclus cocama) is a small armoured catfish in the family Loricariidae, native to Peru. At just 4 cm (1.6 in) it is one of the smallest algae-eating catfish in the hobby — and one of the most visually striking. Its cream-white body is overlaid with a bold dark-brown zigzag lateral stripe that gives an unmistakable tiger- or zebra-like look, clearly distinguishing it from the plainer Otocinclus vittatus commonly sold in stores.
Like all otocinclus, O. cocama is a dedicated biofilm and algae grazer, attaching its sucker mouth to glass, broad plant leaves and smooth hardscape throughout the day. It is entirely peaceful and poses no threat to any tank-mate. That said, it is not a beginner’s fish: it demands clean, soft Amazonian water, must be kept in a social group, and requires consistent supplemental feeding. Get those fundamentals right and the Tiger Otocinclus is a rewarding, long-lived addition to a mature planted tank.
Where does the Tiger Otocinclus come from?
Otocinclus cocama is endemic to the upper Amazon basin in Peru, principally the Rio Ucayali and its tributaries. These streams run through lowland rainforest at warm, stable temperatures with soft, mildly acidic water, low mineral content and high dissolved oxygen. Dense riparian vegetation filters the light and supports the biofilm and algae communities that otocinclus depend on for food.
All O. cocama in the trade are wild-caught — captive breeding is uncommon and commercial aquaculture does not exist for this species. Buying from reputable importers who quarantine stock before sale reduces the parasite and stress burden that kills so many newly purchased otos.
What size tank does a Tiger Otocinclus need?
The minimum practical tank is 40 litres (10 gallons) for a small group, but only in a mature, well-planted setup. For a mixed community, 75 L (20 gal) or more gives greater parameter stability and more grazing surface.
Tank footprint matters more than depth — longer tanks maximise the glass and leaf surfaces where these fish spend their time. Provide broad-leafed plants (anubias, java fern, amazon sword), smooth driftwood and flat rocks. Filtration should be gentle and well-oxygenated; otocinclus need pristine water but are easily blown off surfaces by strong flow. A sponge filter or a canister on low turnover is ideal.
What water parameters do Tiger Otocinclus need?
- Temperature: 22–27 °C (72–81 °F). Avoid the upper end of tropical community ranges — these fish prefer the cooler part of the Amazonian spectrum.
- pH: 6.0–7.5. Slightly acidic to neutral is ideal; hard alkaline water stresses them over time.
- Hardness: 2–12 dGH. Soft water is strongly preferred; tap water above roughly 15 dGH should be diluted with RO or rain water.
- Ammonia / nitrite: zero at all times. Tiger Otocinclus are acutely sensitive to nitrogen waste — only add them to a fully cycled tank.
- Nitrate: keep below 20 ppm with regular water changes.
Parameter stability is at least as important as hitting exact numbers. Sudden swings — in temperature, pH or hardness — are a common cause of losses shortly after purchase. Condition new arrivals slowly and never add them to an uncycled tank.
What do Tiger Otocinclus eat?
Tiger Otocinclus are herbivores that graze biofilm and soft algae almost continuously. In a well-established planted tank they will work glass panels, plant leaves (especially broad-leafed species like anubias), driftwood surfaces and smooth rocks throughout the day. However, relying on naturally occurring algae alone is one of the most common mistakes keepers make with this species: even a visibly algae-coated tank rarely provides enough calories for a group of six or more active fish.
Supplement their diet daily from the moment they arrive:
- Sinking algae wafers — the most reliable staple; place one or two near where the group congregates.
- Blanched vegetables — zucchini (courgette), cucumber and spinach are accepted readily; remove uneaten portions after 24 hours.
- Spirulina-based sinking wafers — useful for variety and colour support.
Feed in the evening when otocinclus are most active. Watch that other bottom-dwellers such as corydoras are not consuming all the food before the otos reach it. Slow, painless starvation in the weeks after purchase — even in an algae-rich tank — is the leading cause of otocinclus losses.
How do Tiger Otocinclus behave, and what fish can they live with?
Tiger Otocinclus are among the most peaceful fish available. They are entirely non-aggressive, never fin-nip, and pose no threat to any other species regardless of size. They are, however, a strongly social fish: a minimum group of six is required, and groups of eight to twelve are noticeably more active and settled. Solitary or paired otocinclus become withdrawn, hide persistently and often refuse to feed adequately — always keep them as a proper shoal.
They spend virtually all of their time at the bottom and mid levels, clinging to surfaces, so they do not compete for space with surface-dwelling or mid-water fish. Ideal tank-mates are other peaceful community species that share similar soft, warm-water requirements: small tetras, rasboras, dwarf cichlids (apistogramma, ram), corydoras and peaceful livebearers all work well. Avoid large or semi-aggressive fish that might harass or outcompete them at feeding time.
For a complete list of proven companions, see Tiger Otocinclus tank mates.
How do you tell male and female Tiger Otocinclus apart?
Sexing Tiger Otocinclus is straightforward once fish reach maturity, but requires viewing them from above or from directly in front. Females are noticeably wider-bodied, particularly at the belly, and this difference becomes very obvious when a female is gravid (carrying eggs). Males are slimmer and more streamlined in profile. From the side, the difference can be subtle in non-gravid fish; the top-down view is the most reliable method. There are no significant differences in fin shape, size or colouration between the sexes.
How do Tiger Otocinclus breed?
Breeding Otocinclus cocama in captivity is rated hard — it occurs occasionally but is not reliably repeatable. Triggering spawning typically requires conditioning adults with a varied diet, then simulating the onset of a rainy season: perform larger water changes with slightly cooler, softer water to drop temperature toward 22 °C (72 °F). Spawning involves the male fertilising eggs deposited in small clusters on plant leaves or glass; there is no parental care after the event.
Eggs hatch in roughly three days. Raising fry is the main challenge — they are tiny and need consistently available biofilm from hatching. A species-only tank allowed to develop a natural algae coating before introducing adults gives the best results. Given the hard rating, most keepers focus on providing good conditions rather than actively breeding this species.
What diseases affect Tiger Otocinclus?
Tiger Otocinclus share the disease vulnerabilities common to wild-caught Amazonian catfish:
- Ich (white spot disease): Stress-related and often triggered by chilling or a pH drop. Quarantine new arrivals for at least two weeks and maintain stable temperature.
- Velvet (Oodinium): A fine gold-dust parasite that spreads quickly in a shoal; early signs are flashing and clamped fins.
- Internal parasites: Wild-caught otos frequently carry internal parasites — a quarantine period with observation for hollow-bellied or wasting fish is essential.
- Starvation: Not a disease but the single most common cause of death in this species. A persistently sunken belly is the warning sign; increase supplemental feeding immediately.
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; many otocinclus losses are worsened by incorrect medication rather than the underlying illness.
Prevention rests on three foundations: a fully cycled tank, a proper quarantine period, and consistent supplemental feeding from day one.
How long do Tiger Otocinclus live?
A well-kept Tiger Otocinclus lives 3–5 years. Because all specimens in the trade are wild-caught and have already endured the stresses of collection, transport and import, the fish you buy may have had a difficult start. Many losses happen in the first four to six weeks; fish that settle successfully and are fed properly are robust and can reach the higher end of that lifespan.
The keys to longevity are the same as the keys to survival: a mature, soft-water, algae-bearing tank; a social group of at least six; daily supplemental feeding; and stable, clean water maintained with regular partial changes. Give them those conditions and Tiger Otocinclus become an active, visible, genuinely functional part of a planted community — grazing glass and leaves around the clock throughout the day.
Frequently asked questions
Is the Tiger Otocinclus the same as the regular Otocinclus?
No. The common Otocinclus sold in the trade is usually Otocinclus vittatus, which has a plain olive-brown stripe. Otocinclus cocama is a distinct Peruvian species identified by its high-contrast zebra-like zigzag pattern. Care requirements are similar, but O. cocama is less frequently available and commands a higher price.
What should I feed Tiger Otocinclus when there is not enough algae?
Supplement with sinking algae wafers, blanched zucchini (courgette), and cucumber. Place food on the substrate in the evening when otocinclus are most active. Without supplemental feeding, they can slowly starve even in an algae-coated tank — this is the most common cause of losses in the first weeks after purchase.
What you need to keep a tiger otocinclus
The baseline is a heated, filtered 40 L+ tank: a reliable heater to hold 22–27 °C (72–81 °F), a gentle filter that won't batter a tiger otocinclus in the current, and a tight-fitting lid. Cycle the tank fully before adding any fish.
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