Exallias brevis is a blenny that can be found on coral reefs from the Red Sea east to Hawaii. It feeds exclusively on corals leaving behind characteristic white marks that may be mistaken for disease or bleaching effects. It feeds on a wide variety of corals including Porites, Pocillopora, Montipora, Acropora, Leptastrea, Pavona, Cyphastrea, and others including Millepora. Hawaiian E. brevis make circular scars that average 2.04cm-squared. Males feed at a mean rate of 13.94 bites/hour; females at 28.4 bites/hour. Usually they do not feed in the same spot before the coral regenerates (which can up to 50 days in Hawaii), however they can kill large patches of living coral when preparing a nest site. This video and photographs should give reef observers an idea of how to distinguish Exallias feeding marks from marks made by larger butterflyfishes. Video by Bruce Carlson
Author: Bruce Carlson
No one has provided updates yet.