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Black and white snapper

Macolor niger

Black and white snapper
Photo by Jean-Paul Boerekamps · CC0

About

This snapper changes its look completely as it grows up. As a young fish it wears stripes, but as an adult it turns all black. It often swims with a lookalike relative, another snapper that looks much the same.

Also known as: black snapper, black and white seaperch, black and white snapper, black-and-white snapper, snapper, black-and-white snapper, black & white snapper, black and white seaperch, black snapper, black and white snapper, black and white seaperch

Length
35 cm · max 75 cm
Depth
up to 90 m

How to tell it apart

This species can be confused with other dark snappers on the reef. Look at the fins for the clear giveaway: the rear tips of both the dorsal fin and the anal fin come to a sharp point. Many similar-looking snappers have rounded fin tips instead.

Appearance

This snapper has a fairly deep body and a rounded head profile. Its eyes and fins are black. Body colour ranges from light grey to black, depending on age. Juveniles are striped, but as they grow up the stripes fade and the whole body turns black.

Habitat

Black and white snapper live across the tropical Indo-Pacific. You find them on steep outer walls of lagoons and channels, and on seaward reef slopes, at depths from about 2 to 90 metres.

Behaviour

Young fish tend to live alone, but adults gather in large schools along steep reef walls. It hunts fish and crustaceans, and comes together in groups to spawn.

Did you know?

Adults often swim in mixed schools with a very similar relative, the midnight snapper. The two look so alike that even experienced reef-watchers can mix them up.

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