DAMSELFISH
POMACENTRIDAE
Longfin Damselfish
Stegastes diencaeus
    Ecological Descriptors
Habitat Size (cm) Diet Behaviour Sex 
R, Co 15 Veg (Car, Wor, Mol) Ter F
Longfin Damselfish Juvenile
Description:
Adult:
Dorsal and anal fins extend beyond base of tail. The similar Dusky Damselfish, S. adustus, has shorter fins which do not extend beyond the tail base. Often with bright blue edge on anal fin.
.Juveniles:  Juveniles are Yellow, with brilliant blue lines from the snout to the back. Dark spot, ringed on blue on mid-dorsal fin.

Ecology
Adults inhabit rocky shores and shallow reefs exposed to wave action. Usually <5m depth. Often in tide pools. Feed primarily on algae and detritus. Territorial and pugnacious.  Oviparous, distinct pairing during breeding . Eggs are demersal and adhere to the substrate. Males guard and aerate the eggs

Life Cycle:
Oviparous, distinct pairing during breeding . Eggs are demersal and adhere to the substrate. Males guard and aerate the eggs

Longfin Damselfish
Longfin Damselfish
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Longfin Damselfish