Lutjanus apodus, also known as the schoolmaster snapper, is easily distinguished from its other family members, since all his 5 fins are yellow. These feature is known to no other member of the family Lutjanidae.
We find the schoolmaster snapper in both the western and eastern Atlantic. From the coast of Massachusetts to Brazil in the south and east to the Ivory Coast and Guinea in the south east of the African Atlantic coast.
Usually they remain near or between Acropora corals and sea fans. Juvenile animals are often be found on sand or seagrass beds and on the muddy bottoms of lagoons and mangrove areas. Adult animals often can be seen during the day in swarms. Juveniles are often found in the brackish water areas of the river deltas.
Lutjanus apodus feeds mainly on small fish, shrimp, crabs, snails and worms but also of other small animals.
The schoolmaster snapper reaches a length of about 35 cm but because of his eating habits it is less suitable for a reef aquarium.