Cherry Barb Care Guide

The cherry barb is the peaceful barb — the deliberate exception to the "all barbs are nippers" reputation that the tiger barb earned. It does not nip fins and does not bully, but it is naturally shy, and whether the males ever glow their famous cherry-red comes down almost entirely to two things: enough fish in the group and enough cover to feel safe.

Cherry Barb at a glance

The sourced figures the welfare engine uses to judge Cherry Barb — the parseable key facts.

Where it comes from

Cherry barbs are Puntius titteya (Deraniyagala, 1929), endemic to Sri Lanka and restricted to a few southwestern "wet zone" streams in the Kelani and Nilwala river basins. The wild biotope is small, heavily shaded forest streams in lowland rainforest — shallow, slow-flowing water over sandy substrate carpeted with leaf litter, under dense overhead cover. Because the streams are shaded, the water runs relatively cool, which is why this barb tolerates the lower end of the tropical range better than most. The chemistry is soft, slightly acidic to neutral and low in hardness. Every part of that origin maps onto the care: dim light, dense planting and dark substrate bring out the red and, crucially, calm a shy fish; gentle flow suits a slow-stream native; and soft, slightly acidic water is ideal, though captive stock is adaptable. The specific epithet titteya comes from a local Sinhalese name for the fish.

Did you know?

• The peaceful barb — the exception to the rule. While barbs are famous for fin-nipping thanks to the tiger barb, the cherry barb is genuinely peaceful and community-safe: active and colourful without the nipping.
• Its colour is a mood ring. Dominant, comfortable males glow deep cherry-red; stressed or under-stocked fish fade to tan. The fish literally reports its own welfare and confidence — more fish and more cover means more red.
• A Sri Lankan endemic that's vulnerable at home but common in our tanks. Puntius titteya is restricted to a few southwestern wet-zone streams and is IUCN Vulnerable (assessed 2019), with Sri Lanka's national assessment rating it as high as Endangered — threatened by deforestation, pollution, hydro projects and historic over-collection of the most colourful wild fish.
• Wild export is restricted, so the trade runs on aquaculture. Sri Lanka prohibits export of wild-caught specimens, which means virtually every cherry barb you can buy is captive (farm) bred — buying captive-bred is the responsible default.
• A genus named for a conservationist. In 2023 scientists proposed reclassifying it as Rohanella titteya, honouring Sri Lankan biologist Rohan Pethiyagoda — though the proposal is recent, not yet universally adopted, and contested in the 2025 literature, so Puntius titteya remains the working name.
• Its captive finery exists only because of the hobby. Long-fin/veiltail and albino strains arose from line-bred mutations and would be easy prey in the wild.

Tank size — and why

Sources put the minimum anywhere from a 10-gallon (about 60 cm, Aquarium Co-Op's figure for a group of six) up to 20–30 gallons once tankmates are added; Seriously Fish gives a 60 x 30 cm footprint, roughly 15 gallons. Our stored 15 gallons sits sensibly in that zone — a 10-gallon is the bare species-only floor, and 15–20 gallons is the comfortable real-world target for a confident school plus community fish. The driver of the minimum is not bioload (these are small, low-waste fish) and not territory — it is swimming room, group size and cover. A longer footprint with dense planting is what lets a shy school feel secure enough to come out and colour up. Prioritise length over height. Adults are small, about 4–5 cm total, with many tank fish settling around 4 cm and 5 cm the upper end; males run smaller and slimmer than females.

As a guide, a 20-gallon tank comfortably suits about 8–11 Cherry Barb as a single-species display, leaving room for tankmates.

How big does it really get?

Full-grown Cherry Barb reach about 5 cm (2 in) long, but they are usually sold at only about 2.5 cm (1 in) — a typical shop size (estimate). At full size, Cherry Barb needs roughly a 15-gallon tank, about 51 cm long; a common 10-gallon starter kit is only about 51 cm.

Adult size is sourced; the shop size is a typical-juvenile estimate; tank length is approximate for a standard 15-gallon aquarium.

Water parameters in practice

Aim for about 24–26 °C, but the useful point is that the cherry barb is unusually cool-tolerant for a barb: the shaded wild streams run cool, Seriously Fish extends the floor to ~20 °C and Aquarium Co-Op gives ~22 °C, so it is comfortable in the low 20s and a genuine option for unheated or cooler rooms. Our stored floor of 23 °C is safe but understates that tolerance. The tolerated band across sources is roughly 20–27 °C; avoid pushing it into the high 20s long-term. On chemistry it is adaptable but leans soft and slightly acidic — best colour and breeding at pH 6.0–7.0, though farm-raised stock tolerates 6.0–8.0, and hardness of about 5–19 dGH (soft to moderately hard). It handles harder, more alkaline tap water better than the soft-water tetras. Soft, slightly acidic, dimly lit water with some tannins is what maximises male colour and triggers spawning. As always, a mature, cycled, stable tank matters more than chasing an exact number.

Diet & feeding

A wild omnivore and micropredator — gut contents include detritus, green algae, diatoms, dipterans and animal matter. In the tank a good-quality flake or nano pellet makes the base, topped up with small live or frozen foods — bloodworm, Daphnia, brine shrimp, microworm — plus some plant or algae matter such as spirulina, which deepens colour and conditions them for breeding. Feed small amounts once or twice a day (some keepers do two or three small feeds), sparingly enough to protect water quality. They are active mid-water feeders and not shy at feeding time once settled, but in a mixed tank make sure they get their share against faster tankmates.

Gear & setup

Cover is not decoration for this fish — it is the primary husbandry tool. Dense planting, floating plants for shade, driftwood and leaf litter, over a dark substrate, are what coax a shy species out of hiding and let the males fully redden; a bare, brightly-lit tank leaves them pale and skulking. Run gentle flow — they are slow forest-stream fish, not current-lovers. A heater is optional in a warm room given their cool tolerance, but if used, set it to the mid-20s Celsius and don't run them hot. A lid is sensible; they are active and can jump, though they are not notorious jumpers.

Temperament & behaviour

Genuinely peaceful and not a fin-nipper — the standout exception among barbs and the deliberate contrast with the tiger barb. Seriously Fish calls it "very peaceful"; Aquarium Co-Op says they do not nip fins and do not tend to bother other fish. In a community the cherry barb is far more likely to be the victim than the aggressor, which is why boisterous, nippy company — tiger barbs, serpae tetras — and big-mouthed predators like angelfish are vetoed from its recommended tankmates: those fish stress or eat it. The other defining trait is shyness. Cherry barbs are naturally timid and skittish, and under-stocked, under-covered fish hide and lose colour, with males that never fully colour up. The cure is numbers and cover. The only within-species friction is mild male chasing and display — dominant males will harass subordinate males or a lone female if the group is too small or the sex ratio is wrong — but this is hierarchy display, not community aggression, and it is solved by a bigger group and more females.

Group & social needs

A peaceful schooling fish that must be kept in a group. The floor is six, but because it is so shy the sources converge hard on eight to ten or more for confident schooling and full male colour — six is the bare minimum, eight to ten-plus is where they actually behave like cherry barbs. Sex ratio matters: keep at least two females per male. With too few females or too small a group a dominant male fixates on and chases a subordinate or a single female; a balanced group of eight-plus at a 2:1 female-to-male ratio diffuses that. More fish plus more cover equals more confidence and more red — the single most important husbandry lever for this species.

Compatible tank mates (preview)

A short, engine-cleared shortlist — the species TankStocking's welfare engine clears with Cherry Barb and that suit its size and temperament best. Tap any to load the pairing in the planner.

• Amano Shrimp — Peaceful temperament, similar adult size.
• Bamboo Shrimp (Wood/Fan Shrimp) — Peaceful temperament, similar adult size.
• Black Neon Tetra — Peaceful temperament, similar adult size.

A note on the shrimp and snails here: Cherry Barb is peaceful and generally invertebrate-safe — but almost any fish will take very small shrimplets given the chance, so give shrimp dense cover (moss, leaf litter) if you want a colony to grow, rather than expecting every baby to survive.

This engine-cleared shortlist is Cherry Barb's tankmate surface for now — a dedicated tank-mates guide can follow for high-demand species.

Breeding & sexing

Easy — one of the simpler egg-scatterers to breed, and helped by clear, easy sexual dimorphism that is unusual among barbs. Males are smaller, slimmer and brightly cherry-red, deepening to a glowing deep red when breeding or dominant; females are larger, rounder and paler fawn-tan with a more visible dark lateral stripe. To breed them, condition a pair or group on live foods, then use a separate, dimly-lit spawning tank with fine-leaved plants or spawning mops (or a mesh/grid bottom, since parents eat the eggs), with slightly acidic-to-neutral soft water and temperature towards the upper end of the range. Females scatter about 200–300 eggs; remove the parents or rely on the mesh after spawning. Eggs hatch in roughly 24–48 hours and the fry are free-swimming a day or two later — start them on infusoria and microscopic foods, then microworm and baby brine shrimp, kept dim and clean.

Lifespan

About 4–6 years with good care, four years a fair average, and up to around seven for exceptionally well-kept fish. What shortens it is chronic stress from too small a group or too little cover — the number-one cause for this shy species — followed by poor water quality, overly warm water and aggressive or large tankmates. Because their colour is mood-linked, a washed-out school is an early welfare flag, not just a cosmetic one.

Common mistakes

• Too small a group. The number-one mistake. Kept in ones to fives they stay permanently shy and washed-out and the males never redden. Buy eight to ten or more; treat six as the hard minimum.
• No cover, or a bare, brightly-lit tank. A shy species in a bright bare tank hides and stays dull. Give them dense plants, floating cover, dark substrate and leaf litter.
• Wrong sex ratio. All-male or one-male-one-female groups let a dominant male harass. Aim for at least two females per male.
• Pairing them with nippy or aggressive fish. Cherry barbs are the calm barb and become the victim — housing them with tiger barbs, serpae tetras or large cichlids and angelfish stresses or eats them, which is why those are excluded from its recommended tankmates.
• Skipping the cherry barb because "barbs are nippy." The opposite mistake — keepers avoid it because of the tiger barb's reputation, when it is precisely the peaceful, non-nipping, community-safe barb.
• Buying dyed or "balloon" morphs. These are a welfare red flag; the legitimate albino, super-red and long-fin strains are line-bred, not dyed.

Signs of trouble

• Males going dull and the school losing colour — the single most telling early sign, usually too few fish, too little cover, or stress.
• Persistent hiding and skittishness, fish that won't hold in open water — under-stocking or a bare, exposed tank.
• One male relentlessly chasing a subordinate or a lone female — too small a group or too few females.
• Clamped fins, loss of appetite and erratic swimming — general stress or declining water quality.
• White spots plus flicking or scratching — ich, typically secondary to stress or poor water.

Is this fish right for you?

Don't buy cherry barbs if you can't keep a group of at least six (ideally eight to ten), if you can't provide a planted, covered tank with some shade and dark substrate, or if your community contains fin-nippers or predators their size — they are the calm, bite-sized barb and will be bullied or eaten by the wrong company. On stock: avoid dyed or balloon morphs, which are a welfare red flag; the albino, super-red and long-fin/veiltail strains are legitimate line-bred ornamentals (long-fins are a touch slower and more delicate but otherwise the same peaceful fish). Sourcing is overwhelmingly captive-bred, which is the right choice given the wild conservation status — buy captive-bred.

Common questions

Are cherry barbs peaceful, or do they nip fins?

Peaceful — they are the standout non-nipping barb and the deliberate alternative to the tiger barb. They don't nip fins and don't bother other fish; in a community they're far more likely to be the victim than the aggressor, so keep them away from tiger barbs, serpae tetras and big-mouthed fish like angelfish.

Why isn't my cherry barb red? Why does it keep hiding?

Almost always too few fish or too little cover. Cherry barbs are naturally shy, and under-stocked or exposed fish stay pale and hide while the males never fully redden. Keep eight to ten or more, add dense plants, floating cover and a dark substrate, and the males will colour up.

How many cherry barbs should I keep, and what ratio?

Six is the bare minimum, but eight to ten or more is where they school confidently and the males fully colour up. Keep at least two females per male — too few females lets a dominant male harass a subordinate or a lone female.

What temperature do cherry barbs need?

About 24–26 °C ideal, but they're unusually cool-tolerant for a barb — comfortable down to roughly 20–22 °C, which makes them an option for cooler or unheated rooms. The tolerated band is around 20–27 °C; avoid the high 20s long-term.

Cherry barb vs tiger barb?

Cherry barbs are smaller (4–5 cm), all-over red with a single dark stripe, and genuinely peaceful. Tiger barbs are larger, boldly black-striped, and habitual fin-nippers. The cherry is the calm community barb; the tiger is the notorious one.

Are cherry barbs endangered?

In the wild, yes — they're a Sri Lankan endemic listed IUCN Vulnerable (and nationally as high as Endangered), restricted to a few streams. But wild export is restricted and the trade is almost entirely captive-bred, so buying captive-bred fish is the responsible choice and doesn't pressure the wild population.

Sources & confidence

Sources & confidence (9 species)

These back the Cherry Barb figures and the previewed tank mates above. Each figure is read from the TankStocking species database (v2026.06); below is the care reference behind it and how confident we are in that data. Confidence reflects the source quality, not whether any pairing is safe. Full source list and the welfare model are on the methodology page.

• Cherry Barb Puntius titteya — Seriously Fish (Puntius titteya) seriouslyfish.com/species/puntius-titteya high confidence
• Amano Shrimp Caridina multidentata — Aquarium Co-Op amano shrimp care; Aquadiction high confidence
• Bamboo Shrimp (Wood/Fan Shrimp) Atyopsis moluccensis — Aquariadise (aquariadise.com/caresheet-bamboo-shrimp-atyopsis-moluccensis) high confidence
• Black Neon Tetra Hyphessobrycon herbertaxelrodi — Seriously Fish / Aqua-Fish (Hyphessobrycon herbertaxelrodi) high confidence
• Black Phantom Tetra Hyphessobrycon megalopterus — Seriously Fish (Hyphessobrycon megalopterus) high confidence
• Bleeding Heart Tetra Hyphessobrycon erythrostigma — Seriously Fish (Hyphessobrycon erythrostigma) high confidence
• Boesemani Rainbowfish Melanotaenia boesemani — Seriously Fish; Aquarium Co-Op Boesemani guide high confidence
• Bolivian Ram Mikrogeophagus altispinosus — Seriously Fish (seriouslyfish.com/species/mikrogeophagus-altispinosus) high confidence
• Brilliant Rasbora Rasbora einthovenii — Seriously Fish (seriouslyfish.com/species/rasbora-einthovenii) high confidence

Care-guide sources (8)

This guide synthesises the references below; where they disagree, the range and the disagreement are noted in the text above. The figures in the key-facts box are read from the TankStocking species database (v2026.06). Full welfare model on the methodology page.

• FishBase — Puntius titteya — authority (Deraniyagala 1929), family Cyprinidae, max 5.0 cm TL / common 2.5 cm TL, temp 23–27 °C, pH 6.0–8.0, dH 5–19, range (Kelani–Nilwala, Sri Lanka), IUCN Vulnerable (2019), diet/trophic level 2.8, synonyms
• Seriously Fish — Puntius titteya — synonyms (Barbus, Capoeta), endemic Sri Lanka range/type locality, shaded cool forest-stream biotope, 40–50 mm SL, temp floor ~20 °C, soft/low-hardness wild water, 60x30 cm tank, "very peaceful," group of 6–10, sexing (males smaller/slimmer/more colourful), breeding setup, wild-export-prohibited note, albino/super-red strains
• Wikipedia — Cherry barb — Deraniyagala 1929, synonyms, 2023 Rohanella reclassification proposal, 5 cm size, endemic Sri Lanka + introduced Mexico/Colombia, IUCN Vulnerable, sexual dimorphism (male deep red; female fawn), groups of 5+, 2 females per male, lifespan four years (max ~seven), 200–300 eggs, pH 6–8 / 5–19 dH / 23–27 °C
• Aquarium Co-Op — Care Guide for Cherry Barbs — 2 in / 5 cm, 72–80 °F (22–27 °C), pH 6.0–8.0, six in a 10-gallon-plus, peaceful, do not nip fins, 1–2 females per male, males bright cherry-red vs tannish females, tankmates, diet, easy breeding
• Fishkeeping World — Cherry Barb Care Guide — up to 2 in (males smaller), lifespan 4–6 yrs, 74–79 °F (23–26 °C), pH 6.0–7.0, 2–18 dGH, peaceful schooling, timid/skittish without refuge, rarely nips fins, 200–300 eggs / hatch ~48 h, super-red & albino strains
• AquariumStoreDepot — Cherry Barb Care & Tank Mates — "peaceful alternative to tiger barbs," males turn stunning red when comfortable, group of 8+ for male display, 2 females per male, victim-not-aggressor framing
• Sudasinghe et al. 2023 (Zoologica Scripta) — Rohanella proposal — Puntius complex polyphyly, 2023 proposal of monotypic genus Rohanella (type R. titteya) honouring Rohan Pethiyagoda; distinctive traits; proposal contested in 2025
• Conservation / wild-status consensus (Fishipedia, threatenedtaxa.org) — declining wild population, threats (hydro, pollution, deforestation, over-collection of colourful fish), export restriction, trade is captive-bred, Sri Lanka national status Endangered vs IUCN Vulnerable

More on Cherry Barb

Related guides on TankStocking — each scored by the same welfare engine as the planner.

This care guide is a sourced planning reference, not veterinary advice — individual fish, filtration and maintenance all matter. Cycle the tank, test your water, and observe your fish. How TankStocking works →