Variations
1 kinds · tap one for a closer look
Wine-red betta
Peaceful and shy; a pair or small group fits a quiet, planted nano tank.
- White cloud mountain minnow needs cool water and makes a lot of waste, while Wine-red betta is tropical.
- Only a narrow temperature range suits both: exactly 22 °C.
- They need very different water (pH 4–6 vs 7.5–8.5).
- Giant gourami eats animals up to about 10 cm. Wine-red betta only grows to 5.6 cm.
- Their pH needs don't quite meet (4–6 vs 6.5–8). Aim between the two and keep it steady.
- Only a narrow pH range suits both: exactly 6.
- Only a narrow pH range suits both: exactly 6.
117 species in our list are a good match.
Care and water
Behavior
Peaceful and shy; a pair or small group fits a quiet, planted nano tank.
Food
Small live and frozen foods such as daphnia, brine shrimp and mosquito larvae.
Tap a food to see what it is.
Male or female
Males are more colourful, develop longer fins and carry an iridescent green blotch on the flank that females lack.
Health
Common problems. Tap one to see the signs. This is a guide, not a diagnosis.
Breeding
Bubble-nester · Hard
Bubble-nester. The male builds a nest in a tube, under a leaf or among floating plants, and alone guards the eggs and fry. Adults usually do not eat the young; fry take microworm and Artemia nauplii once free-swimming. Very soft, acidic water is needed.
A conditioned pair in a very soft, acidic tank.
20 L soft acidic tank with floating plants, a leaf and low flow.
Soft acidic water, live foods and warmth.
Usually fewer than 20 eggs, sometimes up to 50. Eggs hatch in 24-48 hours and the fry stay in the nest 3-4 more days.
Infusoria, then newly hatched brine shrimp; the male guards the eggs.
- Hard water
- Loud tankmates
- Too-strong flow
Where it lives in the wild
The story of the wine-red betta
A small dark-red bubble-nesting betta from peat swamp forests in Sumatra (Jambi, Riau) and Johor, Malaysia. Males have an iridescent green spot on the flank, and keepers label stock by collection locality to keep bloodlines pure.
German aquarist and author Jörg Vierke described this small betta in 1979. Its deep wine-red colour made it the namesake of a whole group of small peat-swamp bettas.
First described by Jörg Vierke in 1979. Named for 'Coccina' means scarlet or wine-red.
- It gives its name to the 'coccina group' of small bettas.
- Males build small bubble nests, often hidden among plants.
- It needs very soft, acidic water.
Sources
16 facts checked with sources
- Scientific name
Valid name. Watch the trade label: Ding et al. 2025 split the B. coccina complex and described two new species, including B. mulyadii from Riau, Sumatra (formerly sold as 'Betta sp. Riau Red'). Red 'coccina' from Riau may therefore be another species.
Eschmeyer's Catalog of Fishes: Betta coccina (online version updated 21 Sep 2026) · FishBase: Betta coccina summary - Familycorrected
Legacy has no family field; sourced value recorded.
FishBase: Betta coccina summary · Eschmeyer's Catalog of Fishes: Betta coccina (online version updated 21 Sep 2026) - Sizecorrected
Seriously Fish 4.0 cm SL; FishBase 5.6 cm TL (total length incl. tail). FishBase gives total length as 132.7-138.5% of SL, so 4.0 cm SL is about 5.3-5.5 cm TL and the two agree. TL figure recorded as the larger; legacy 5 cm is close.
Seriously Fish: Betta coccina · FishBase: Betta coccina summary - Temperature
Legacy 22-27 °C is inside Seriously Fish's 22-30 °C.
Seriously Fish: Betta coccina · FishBase: Betta coccina summary - pHcorrected
Both sources give 4.0-6.0; legacy top of 6.5 is slightly high.
Seriously Fish: Betta coccina · FishBase: Betta coccina summary - Hardnesscorrected
Legacy has no hardness; Seriously Fish range recorded.
Seriously Fish: Betta coccina - Smallest tankcorrected
45 x 30 cm base x 30 cm height = 40.5 L (Seriously Fish lists ~40 L). Legacy 30 L. Seriously Fish: could house a pair or small group.
Seriously Fish: Betta coccina - Group sizecorrected
Seriously Fish rates it 'best in a pair' (kept as a pair, ideally one that formed naturally, in a species tank). Legacy 1 (single fish) is not what the source advises. Seriously Fish notes mixed reports on keeping several pairs or harems.
Seriously Fish: Betta coccina - Temperament
Seriously Fish: physical damage is rare per some keepers, others report sustained aggression from dominant fish. Too mixed to confirm legacy 'peaceful'; best alone or with very peaceful species.
Seriously Fish: Betta coccina - Swimming level
No source names an aquarium swimming level; FishBase calls it benthopelagic. Its air-breathing (labyrinth) habit does not by itself make it a top-dweller.
FishBase: Betta coccina summary - Care level
Seriously Fish's difficulty rating is 'Moderate'. Legacy 2 (1 easy, 2 moderate, 3 hard).
Seriously Fish: Betta coccina - Where it livescorrected
Legacy has no range field (story says Sumatra only; Malaysia is missing). IUCN Vulnerable per FishBase. Ding et al. 2025 revised the coccina complex in this area, so the range may shrink as populations are reassigned.
Seriously Fish: Betta coccina · Eschmeyer's Catalog of Fishes: Betta coccina (online version updated 21 Sep 2026) · FishBase: Betta coccina summary - Male or femalecorrected
Legacy 'deeper red male, brownish female' is consistent; the key sexing mark (male's green side blotch) was missing. Seriously Fish notes some Johor males lack the blotch.
Seriously Fish: Betta coccina - Breeding
Bubble-nester confirmed by both sources. Legacy fry diet 'infusoria first' not stated; Seriously Fish says fry take microworm and Artemia nauplii immediately.
Seriously Fish: Betta coccina · FishBase: Betta coccina summary - Eggs and youngcorrected
Legacy 30-100 eggs is too high.
Seriously Fish: Betta coccina - Story
Legacy 'blood-red betta from Sumatra's blackwater swamps' verified, but it also occurs in Johor. 'Favourite among wild-betta fans' is not sourced. Species name means scarlet (Latin coccinus).
Seriously Fish: Betta coccina