Fulleye

Fulleye is a common name used to refer to several species of large-eyed, nocturnal marine fishes in the family Priacanthidae, often called bigeyes. The term does not correspond to a single taxon but to multiple species across at least two genera. Fulleye typically have a stout, laterally compressed body and large eyes with a reflective layer that enhances vision in dim light. Coloration is usually shades of red, pink, or orange, though some species show silver or yellow highlights; juveniles may differ in color from adults.

These fishes inhabit tropical and subtropical oceans worldwide, commonly around coral reefs, rocky substrates, and seagrass beds. They are usually found at shallow depths but some species occur down to tens of meters. Fulleye are usually solitary or form small groups, and they are primarily nocturnal feeders, specializing in crustaceans, small fishes, and soft-bodied invertebrates.

Reproduction details vary by species, but many fulleye are believed to release eggs into the water column that hatch into free-swimming larvae. In the aquarium trade, fulleye are desirable for their color and eye features, but they require stable water conditions and ample space due to their potential size and predatory nature. Conservation status is assessed on a species-by-species basis; habitat degradation and overfishing in reef systems can impact local populations.