Centropyge fisheri (Fisher's Angel) Breeding Guide
Centropyge fisheri is a small Indo-Pacific dwarf angel living in haremic groups and spawning pelagic eggs at dusk. Home breeding is not feasible; this guide documents its real biology.
Overview
Centropyge fisheri is a small dwarf angelfish with a wide Indo-Pacific distribution from East Africa to Hawaii and Johnston Atoll, once thought restricted to Hawaii. It reaches about 8.4 cm and lives at depths between roughly 3 and 60 m over rubble, reef slopes and coralline algae. It is among the more peaceful dwarf angels but is not reared by hobbyists.
Sexing
The species is a protogynous hermaphrodite: the dominant female in a group will change sex if there is no male. Because functional sex follows social hierarchy, juveniles cannot be reliably sexed by external appearance.
Spawning Behavior & Trigger
Centropyge fisheri is typically encountered in small groups. Reproduction follows the genus pattern: courtship builds through the late afternoon and peaks at dusk, when a female rises into the water column with the male nuzzling her vent and releases pelagic eggs near the top of the ascent. An oil droplet carries the eggs up into surface plankton.
Egg & Fry Care
Eggs in this genus are transparent, spherical and about 0.6-0.7 mm across. Larvae hatch tiny, deplete the yolk sac within roughly three days, and then need extremely small first foods such as copepod nauplii, since rotifers exceed the first-feeding gape. There is no parental care, and larval rearing is the decisive obstacle to captive production.
Common Challenges
- Pelagic eggs disperse on release and cannot be collected from a display.
- Tiny first-feeding larvae require live copepod nauplii rather than rotifers.
- Stable group structure is difficult to maintain in confined aquaria.
- Captive offspring exist only via commercial or research larviculture.