| Ecological Descriptors
| R, Co
||Veg (Car, Wor, Mol)
Longfin Damselfish Juvenile
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. Yellow or Greenish border on upper eye (as in Threespot, but not in Dusky Damselfishes). Might have a blue border on edge of anal fin, unlike Threespot Damselfish..
.Juveniles: Juveniles are Yellow, with brilliant blue lines from the snout to the back. Dark spot, ringed on blue on mid-dorsal fin.
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
Oviparous, distinct pairing during breeding . Eggs are demersal and adhere to the substrate. Males guard and aerate the eggs