Black axil chromis
Chromis atripectoralis · Pomacentridae
Also known as Black-axil chromis
Beginner
Larger cousin of the green chromis with a black armpit mark; same easy shoaling care.
- Minimum tank
- 190 L
- Temperature
- 24–28 °C
- pH
- 8.1–8.4
- Adult size
- 12 cm
- Group size
- 5+
Will it fit your tank?
Sign in and AquaLog compares Black axil chromis against every tank you track — volume, water type, temperature and pH — then adds it to your livestock in one tap.
Sign in to check my tanksReef & marine husbandry
- Specific gravity
- 1.023–1.026
- Reef safety
- Reef safe
- With corals
- Reef safe.
- With inverts
- Reef safe.
- Minimum in a mixed reef
- 190 L
- Minimum fish-only (FOWLR)
- 190 L
- Aggression
- Peaceful in a proper group.
- Feeding
- Twice daily.
Care requirements
- Minimum tank volume
- 190 L
- Temperature
- 24–28 °C
- pH
- 8.1–8.4
- Hardness
- 8–12 dGH
- Lifespan
- 8–15 years
- Diet
- Omnivore — pellets, mysis, brine.
- Care level
- Beginner
Origin & habitat
- Native region
- Indo-Pacific
- Water type
- Saltwater
- Biotope
- Open water above coral heads
- Natural conditions
- Strong flow, open swimming space.
Behaviour & stocking
- Temperament
- Peaceful
- Minimum group
- 5 fish
- Swims
- Mid-water
- Good tank mates
- ClownfishTangsWrasses
- Avoid
- Large predators
Breeding & difficulty
- Breeding difficulty
- Advanced
- Sexing
- Not reliably sexable.
- Notes
- Rarely reared.
- Common ailments
- Marine ichUronema
