Abudefduf vaigiensis

Behavior:

These are highly active, schooling damselfish found in shallow, surge-heavy areas of the reef. They are opportunistic omnivores, feeding on algae, zooplankton, and the eggs of other reef fish. They are frequently seen near the surface or around artificial structures like piers and buoys. During the breeding season, males become highly territorial and take on a dark blue or purple hue as they guard patches of purple eggs laid on the rocky substrate.

Predators:

Jacks, grouper, and sea snakes.

Did you know?

Their common name, “Sergeant,” refers to the five vertical black bars on their sides, which resemble military rank insignia. They are extremely hardy fish and are often among the first species to return to a reef after a disturbance. Don’t be surprised if they swim right up to your mask—they are notoriously curious and often associate divers with “food” being stirred up from the seabed.