Sealife guideThe Lethrinidae familyThe taxonomy of marine species

Explore the taxonomy of the sea vertebrates including the cetaceans like the whales or the dolphins, the sea birds, the fish, the sharks and the sea turtles !

The fish family Lethrinidae, commonly known as emperors, comprises about 39 species. These species are primarily found in the Indo-Pacific region, particularly in coral reefs. Emperors have an appearance similar to snappers.

Humpnose bigeye bream
(Monotaxis grandoculis)

Longface emperor
(Lethrinus olivaceus)

Longfin emperor
(Lethrinus erythropterus)

Redfin emperor
(Monotaxis heterodon)

Spangled emperor
(Lethrinus nebulosus)

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Monday, March 2nd 2026

The blueface angelfish

The blueface angelfish is a very colorful fish of the tropical coral reefs of the Indo-Pacific, recognizable by its bright blue head and its bluish body finely reticulated with yellow.

Wednesday, February 18th 2026

The Atlantic tarpon

The Atlantic tarpon is a large coastal fish that can grow up to 8 feet long and weigh over 330 pounds, with a silvery body covered in large, reflective scales. Known as the Silver King, it is famous for its spectacular leaps and fierce fight when hooked by sport fishermen.

Friday, January 30th 2026

The dugong

Discover the dugong, a gentle “sea cow” of tropical waters. Learn about its habitat, diet, reproduction, morphology, and the threats facing this unique marine mammal.

Photo of the Day

Crabe arlequin
(Lissocarcinus orbicularis)