Blue Damselfish (Chrysiptera cyanea) in aquarium
๐ŸŒฟ Saltwater ยท Tropical

Blue Damselfish

Chrysiptera cyanea โ€” Pomacentridae
๐Ÿ“ Size:ย 6-8
โณ Lifespan:ย 5
โญ Care level:ย Beginner

Blue Damselfish Overview

The Blue Damselfish is a popular saltwater species known for its striking blue color and peaceful nature. They require a spacious tank and a compatible community to thrive. With proper care, they can live up to 5 years.

Quick fact: Chrysiptera cyanea belongs to the family Pomacentridae. Care level: beginner.

Blue Damselfish Scientific Classification

RankClassification
FamilyPomacentridae
GenusChrysiptera
SpeciesChrysiptera cyanea
Water typesaltwater

Blue Damselfish Natural Habitat

Found in the Pacific and Indian Oceans, these fish inhabit coral reefs and lagoons.

Blue Damselfish Appearance & Size

Characterized by bright blue bodies with horizontal black stripes and a white face.

Coloration: Bright blue with black stripes

Blue Damselfish Behavior & Temperament

Blue Damselfish are generally peaceful but can be shy in new environments. They are not known for schooling behavior and can be kept in groups of 2-5.

TraitValue
Temperamentpeaceful community fish
SchoolingNo
Activity levelmoderate
Important: Avoid housing with overly aggressive species

Blue Damselfish Water Requirements

ParameterIdeal RangeNotes
Temperature22โ€“28ยฐC (72โ€“82ยฐF)Use a reliable adjustable heater
pH8.1โ€“8.4Avoid sudden swings
Hardness (GH)8-12 dGH dGHSoft to moderately hard
Ammonia0 ppmAny detectable ammonia signals a problem
Nitrite0 ppmToxic even at low levels
Nitrate<20 ppmManage through regular partial water changes
Min. tank120L (32 gal)Larger tanks are easier to keep stable
Important: Always dechlorinate tap water before adding it to the tank. Chlorine and chloramines damage a fish's gills and reduce life expectancy.

Interesting Facts About Blue Damselfish

  • Blue Damselfish are often found in pairs or small groups.
  • They can change color depending on their mood or stress levels.
  • Their diet consists of algae and small invertebrates.

Related Species & Guides

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Editorial review

This species profile was reviewed for biological accuracy and practical aquarium care guidance. For suspected illness or disease, test your water parameters first and consult an aquatic veterinarian if symptoms persist.