Domino damsel
Dascyllus trimaculatus · Pomacentridae
Also known as Threespot dascyllus
Beginner
Bulletproof and cheap, and by adulthood a genuine bully — buy with that in mind.
In short: A domino damsel needs at least 190 L (50 US gal), water at 24–28 °C (75–82 °F) and pH 8.1–8.4. It is aggressive, usually kept singly, and rated beginner to keep.
Updated
- Minimum tank
- 190 L (50 US gal)
- Temperature
- 24–28 °C (75–82 °F)
- pH
- 8.1–8.4
- Adult size
- 14 cm (5.5 in)
- Group size
- 1+
Reef & 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 (50 US gal)
- Minimum fish-only (FOWLR)
- 190 L (50 US gal)
- Aggression
- Very aggressive as an adult; hard to remove once rockwork is in.
- Feeding
- Once daily.
Care requirements
- Minimum tank volume
- 190 L (50 US gal)
- Temperature
- 24–28 °C (75–82 °F)
- pH
- 8.1–8.4
- Hardness
- 8–12 dGH
- Lifespan
- 6–12 years
- Diet
- Omnivore — pellets, frozen foods.
- Care level
- Beginner
Origin & habitat
- Native region
- Indo-Pacific
- Water type
- Saltwater
- Biotope
- Reef flats, juveniles near anemones
- Natural conditions
- Warm reef water.
Behaviour & stocking
- Temperament
- Aggressive
- Minimum group
- 1 fish
- Swims
- All levels
- Good tank mates
- TangsLarge wrassesTriggers in FOWLR
- Avoid
- ClownfishGobiesAnything small or slow
Breeding & difficulty
- Breeding difficulty
- Intermediate
- Sexing
- Not visually sexable.
- Notes
- Spawns on rock; male guards eggs.
- Common ailments
- Marine ich
Will it fit your tank?
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