Blue Dottyback

Geographical Origin and Habitat: Indo-West Pacific, primarily found in the coastal reefs of Indonesia. Inhabits shallow, coral-rich slopes and rocky crevices at depths of 2 to 20 meters.

Taxonomy and Morphology: Member of the family Pseudochromidae. Features a slender, elongated body built for quick maneuvers. Grows to a maximum length of 7 cm.

Social Behavior: Exceptionally aggressive and territorial. Boldly defends its chosen cave and will relentlessly bully similarly sized or shaped tankmates.

Coloration and Sexual Dimorphism: Body is entirely brilliant, solid electric blue with violet undertones under good lighting. No reliable external differences between sexes, though males may have longer fins.

Aquarium Setup: Minimum tank size of 120 liters. Must feature plenty of rocky crevices and caves to establish clear territorial boundaries.

Diet and Feeding: Carnivore. Provide frozen mysis, brine shrimp, chopped krill, and high-quality pellets. Feed 2 times daily.

Water Quality: Robust and highly adaptable. Maintain temperature at 22-28°C, pH 8.1-8.4, and salinity at SG 1.020-1.025. Moderate current.

Compatibility and Cohabitation: Do not house with other dottybacks or small, peaceful species like firefish. Best kept with active fish like tangs. Will eat small ornamental shrimp.

Aquarium Breeding: Egg depositor. The female lays a sticky ball of eggs inside a cave, which the male fertilizes and guards until they hatch.

Risks and Diseases: Very hardy. The primary risk is to other tankmates due to its fierce aggression. Ensure the tank has a secure lid.