Smalltooth Emperor

Overview

The Smalltooth Emperor (Lethrinus microdon) is a marine fish widely distributed across the Indo-West Pacific region. It is typically found in small schools, often foraging over sandy substrates near coral reefs, and is recognized as a food fish in many parts of its range.

Distribution & habitat

This species inhabits the Indo-West Pacific, ranging from the Red Sea and East Africa to the Arabian Gulf, Sri Lanka, and eastward toward Papua New Guinea. During the day, it frequents coral reef environments, often moving into adjacent sand and rubble areas to forage. At night, it actively hunts over sandy sea floors surrounding the reef.

Appearance

The Smalltooth Emperor has a moderately long snout with a slightly concave dorsal profile. Its body is generally bluish-gray or brown, often marked with scattered, irregular dark blotches on the sides. Some individuals display three dark streaks radiating forward from the eye. The fins are typically pale or orangish, and the species is characterized by having remarkably small, pointed teeth.

Biology & behavior

These fish are known to swim in small schools, sometimes associating with other emperor species like Lethrinus olivaceus. They are active predators that forage for a variety of prey. Spawning typically occurs annually, with peak activity observed between June and August in certain regions.

Feeding

The diet of the Smalltooth Emperor is diverse, consisting primarily of crustaceans, fish, cephalopods, mollusks, and polychaetes. Crabs and sea urchins are noted as significant components of their diet.