CheckMyFishTankBlue Devil Damselfish care
Chrysiptera cyanea · Saltwater · Beginner level care
A tough, bright blue damsel that is hardy and bossy.
Feeding
Twice a day. A small pinch they finish in about 2 minutes. Marine pellets, frozen mysis, flakes.
Claims a territory and guards it.
Good tank mates
Fish that pass every check with Blue Devil Damselfish in a 60 gallon tank: same water, overlapping temperature, nobody gets eaten and no bullies.
Do not mix with
- Green Chromis: Blue Devil Damselfish is aggressive and will bully peaceful Green Chromis.
- Firefish Goby: Blue Devil Damselfish is aggressive and will bully peaceful Firefish Goby.
- Purple Firefish: Blue Devil Damselfish is aggressive and will bully peaceful Purple Firefish.
- Banggai Cardinalfish: Blue Devil Damselfish is aggressive and will bully peaceful Banggai Cardinalfish.
- Pajama Cardinalfish: Blue Devil Damselfish is aggressive and will bully peaceful Pajama Cardinalfish.
- Yellow Watchman Goby: Blue Devil Damselfish is aggressive and will bully peaceful Yellow Watchman Goby.
- Neon Goby: Blue Devil Damselfish is aggressive and will bully peaceful Neon Goby.
- Yellow Clown Goby: Blue Devil Damselfish is aggressive and will bully peaceful Yellow Clown Goby.
Questions
What size tank does a Blue Devil Damselfish need?
At least 30 gallons. Adults grow to about 3 inches, so plan for the adult size, not the size at the store.
What temperature does a Blue Devil Damselfish like?
76 to 80 degrees Fahrenheit, with a pH of about 8.1 to 8.4. A steady temperature matters more than hitting one exact number.
How many Blue Devil Damselfish should I keep together?
Keep only one. Blue Devil Damselfish fight their own kind.
What do Blue Devil Damselfish eat?
Marine pellets, frozen mysis, flakes. Feed twice a day: a small pinch they finish in about 2 minutes.
Sources
Checked against these sources on 2026-11-10. When sources disagree we use the safer number.