Green chromis
Green chromis grows to about 8 cm and needs a tank of at least 24 UK gal. Here's how to keep it healthy and what it lives well with.
Quick facts
- Water type
- Saltwater
- Group
- Marine fish
- Difficulty
- Beginner
- Temperament
- Peaceful
- Swims
- Middle
- Adult size
- 8 cm
- Minimum tank
- 24 UK gal
- Min swim length
- 90 cm
- Group size
- 5+ together
Water parameters
- Temperature
- 24–27 °C
- pH
- 8.1–8.4
- Hardness
- 8–12 dGH
Tank & care
Green chromis is a shoaling species — keep a group of at least 5 so they feel secure and show natural behaviour. Kept alone or in twos they tend to turn shy, stressed or nippy.
Give it at least 90 cm of swimming length and hold the water around 24–27 °C. Match any new species to these ranges before adding them.
Plan a tank with this fish
Use the stocking calculator to see how many Green chromis your tank can hold and whether your planned tankmates are compatible — it's anchored to your net water volume and footprint.
Figures are conservative hobby-consensus estimates for planning. Individual fish vary — always research a species and watch how yours behave.
Related guides and tools
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