Cherry barb

Water parameters

Tolerated range for this species. Aim for the middle of each band rather than the extremes.

Tank and habitat

Substrate: any.

Behavior

Plant interaction: plant safe.

Feeding

Easy-going omnivore. Flake food, micro pellets, frozen bloodworm, frozen brine shrimp, frozen daphnia, and live food (microworms, baby brine shrimp, daphnia) are all accepted. The wild diet according to gut-content studies runs to detritus, green algae, diatoms, dipteran insects, and small animal matter, so a rotation of dry food with periodic frozen or live items works well. Feeding twice a day in moderate amounts produces better colour and conditioning than once-a-day feeding. Male colour intensity correlates measurably with diet quality: a 2014 peer-reviewed study by Fukuda and Karino found that the red coloration of male cherry barbs corresponds with sperm longevity, and that females preferentially mate with redder males. A varied diet keeps that red saturated.

Compatibility

• An unusually peaceful barb. Doesn't nip fins, which separates it from most of the family, and is one of the few barbs comfortable alongside bettas, fancy guppies, and other long-finned community species
• Males develop intensely red coloration during display. A group of two or three males with four to six females produces near-constant low-key male competition and the strongest colour. Peer-reviewed sexual-selection studies (Fukuda and Karino 2014) confirm that redder males have higher mate-choice success
• Good community partners are tetras, rasboras, corydoras, otocinclus, dwarf gouramis, honey gouramis, and shrimp. Adult Neocaridina shrimp are safe; cherry barbs ignore them in planted tanks
• Timid in small groups or with boisterous tankmates. Tank too sparse, lights too bright, or tankmates too active produces a hiding, washed-out school. Dense planting and calm species fixes it
• The longfin (veiltail) and albino strains are slightly more delicate and need company that does not nip

Origin and habitat

Endemic to the southwestern wet zone of Sri Lanka, where the species is restricted to the Kelani and Nilwala river basins and the smaller drainages between them. The wet zone is a tropical lowland-rainforest belt receiving 2000 to 3000 mm of annual rainfall, most of it from the South-West monsoons between March and August; air temperature stays fairly constant at 25 to 27 C through the year. Feral populations have established in Mexico and Colombia following aquarium-trade releases. Wild habitat is heavily shaded slow-flowing streams with sandy or silty bottoms, dense overhead vegetation, abundant leaf litter, and marginal aquatic plants; Records show the species at 23 to 27 C and pH 6 to 8 in those drainages, and field measurements from Kelani-basin streams have reported pH ranges as low as 5.2. The fish was described as Puntius titteya in 1929 by the Sri Lankan naturalist Paul E. P. Deraniyagala in 'Two new freshwater fishes' (Ceylon Journal of Science Section B Zoology 15(2):73-77), with the type locality given as Ambagaspitiya. The Sinhalese name is Le thiththaya. In 2023 Sudasinghe, Ruber, and Meegaskumbura proposed transferring the species to a new monotypic genus Rohanella based on molecular and morphological evidence, and some references now list the species as Rohanella titteya. A 2025 peer-reviewed mitogenome paper (Tao et al., Mitochondrial DNA Part B) found that the complete mitochondrial genome did not support the Rohanella transfer, clustering instead with Puntius eugrammus, so the placement is still contested and most of the hobby retains Puntius titteya. Synonyms include Barbus titteya and Capoeta titteya. The genus name Puntius derives from the Bengali 'pungti', a vernacular word for small cyprinids. IUCN status is Vulnerable, last assessed in 2019, with the species threatened by hydroelectric projects, agricultural and domestic pollution, deforestation, and (historically) over-collection for the ornamental trade. Sri Lanka has restricted exports since 1996, and the trade today runs almost entirely on captive-bred stock. Wild-form fish are silver with a brown horizontal stripe and red flushes only in the fins; the intensely red trade fish are the product of selective breeding (FishiPedia), although several sources including PangoVet still describe wild-caught fish as more intensely coloured than commercial stock, so individual variation cuts both ways. Albino and longfin (veiltail) strains are also widely available. Adults reach 4 to 5 cm. Two peer-reviewed studies of sexual selection in the species (Fukuda and Karino 2014; Mieno and Karino 2017) document the link between male red coloration, sexual dimorphism, and mate choice.

Breeding

An accessible egg-scatterer for home breeders, though full captive control is harder than the trade's high availability suggests. A 2004 peer-reviewed study by Sundarabarathy, Edirisinghe, and Dematawewa (Tropical Agricultural Research 16:137-149) attempting to breed wild Sri Lankan stock found that spawning did not occur in indoor or outdoor tanks even with hormone injection (hypophysation), and succeeded only in flowing-water systems with elevated total dissolved solids. Their fecundity numbers stand as the most rigorous figures available: 226 to 284 eggs per fish per spawning, egg size 849 to 1149 micrometres, with the species classified as a multiple spawner with perennial breeding behaviour. In a home setup, condition a group on frozen and live food for one to two weeks, then move a pair or a trio (one male and two females) to a 20 to 40 litre breeding tank with mature water, abundant fine-leaved plants or moss (Java moss, Myriophyllum), dim lighting, and temperature around 25 to 27 C. Adults are egg-eaters and will hunt the eggs as soon as spawning ends, so a mesh false-bottom or thick moss layer protects the clutch. Records state roughly 200 eggs scattered among marginal plants per spawning. Egg-to-hatch time runs about 36 to 48 hours under the Sundarabarathy study conditions, though records give 24 to 48 hours; fry reach the free-swimming stage in another 2 to 3 days, are juveniles by 45 to 60 days, and reach adult body and colour at 150 to 210 days at 26 to 28 C. First fry food is infusoria, paramecium, or liquid fry food, transitioning to baby brine shrimp within a week.

Common problems

Shyness in suboptimal conditions is the most common visible issue and is not a disease. Cherry barbs in small groups (fewer than five), in tanks with assertive or fast-moving tankmates, or in bare brightly-lit tanks will hide constantly and show muted colour. Adding numbers (up to six or eight), dense planting, floating cover, and quieter tankmates fixes the problem quickly. Disease-wise the species is unusually hardy: ich from shipping stress is the most frequent complaint, with columnaris and fin rot appearing in neglected water. Longfin and veiltail strains are noticeably more delicate than the standard form because the extended fins damage easily and are exposed targets for nippers. The IUCN Vulnerable listing sometimes raises ethical questions among new keepers, but the conservation issue is wild habitat loss in Sri Lanka rather than aquarium-trade pressure, and the export trade is now overwhelmingly captive-bred. The species lives 4 to 6 years in well-maintained tanks.

Bioload

Further reading

• Biotope aquariums: matching fish to their natural habitat
• The schooling number matters more than you think