How many triggerfish species are there?

About 40 species belong to the triggerfish family Balistidae.

Where are triggerfish found?

They inhabit tropical and subtropical oceans worldwide, with the highest species richness in the Indo-Pacific; most occur in shallow coastal areas and coral reefs.

Are triggerfish kept in aquariums?

Several species are popular in the marine aquarium trade, but many are known to be ill-tempered.

Are any triggerfish pelagic?

A few species are pelagic, for example the oceanic triggerfish (Canthidermis maculata).

What do triggerfish look like?

They are often brightly colored and commonly marked with lines and spots.

Are triggerfish aggressive?

Many triggerfish species are described as notoriously ill-tempered, which can manifest as aggressive behavior.

Do all triggerfish live on reefs?

No—while most are reef-associated, a few species are pelagic.

Saltwater Fishes

Triggerfish

Q: Which habitats do most triggerfish prefer?

Most are found in relatively shallow, coastal habitats, especially at coral reefs.

Triggerfish are about 40 brightly colored marine fishes of the family Balistidae found mainly on tropical and subtropical reefs worldwide.

Last Updated Mar 9, 2026 · 2 sources

Photo byDavid Clode

Species Guide

What to know about triggerfish

A clean field guide focused on habitat, identification, behavior, and conservation context without burying the useful parts.

Triggerfish comprise roughly 40 species in the family Balistidae. They are marine ray-finned fishes often brightly colored and marked with lines and spots. The group inhabits tropical and subtropical oceans worldwide, with the greatest species richness in the Indo-Pacific. Most species occur in relatively shallow, coastal habitats—especially coral reefs—while a few, such as the oceanic triggerfish (Canthidermis maculata), are pelagic. Several triggerfish species are kept in the marine aquarium trade, but many are notoriously ill-tempered.

The strongest linked planning options currently surface around destinations such as Koh Tao, Anilao + Batangas (Verde Island Passage), Phuket and countries such as Philippines, Thailand, Egypt for divers building trips around triggerfish.

Identification

How to identify triggerfish

The visual markers divers can use underwater, plus the species most likely to cause confusion.

Key identification markers

Family

Belong to the family Balistidae (triggerfishes).

Color and pattern

Often brightly colored and commonly marked by lines and spots.

Body type

Marine ray-finned fishes.

Responsible Encounters

How to dive with triggerfish

Conservation-minded guidance for divers who want the encounter without adding pressure.

Be aware that many triggerfish species are known to be ill-tempered; avoid provoking or cornering them and give them space, especially near nests or sheltering sites.

Field Notes