Trigger-Clown ( 8 to 10 cm )

The clown triggerfish is a striking saltwater fish known for its bold pattern and big personality. It has a black body covered in large white spots, a yellow-orange mouth, and bright yellow edging on its fins. Juveniles are especially vivid and eye-catching, which is why they’re popular in marine aquariums.

Despite their beauty, clown triggerfish are highly territorial and aggressive, especially as they mature. They are intelligent, curious, and can recognize their owners, but they’re not considered community-safe fish.

Clown Triggerfish — Care Guide

Tank size

• Minimum 180–240 gallons for an adult

• Needs lots of swimming space and sturdy rockwork

Temperament

• Aggressive and territorial

• Best kept alone or with other large, aggressive fish

• Not reef-safe (will eat invertebrates)

Diet

• Carnivore

• Feed meaty foods: shrimp, squid, clams, krill, fish flesh

• Hard-shelled foods help wear down their teeth

• Feed 1–2 times daily

Water parameters

• Temperature: 72–78°F (22–26°C)

• Salinity: 1.020–1.025

• pH: 8.1–8.4

• Very strong filtration required (messy eaters)

Special care notes

• Strong jaws — can crack shells and damage equipment

• Rearrange rockwork cautiously; they like to “redecorate”

• Needs mental stimulation; boredom can increase aggression

• Can live 10–15+ years with proper care

Quick reality check

Clown triggerfish are not beginner fish. They’re best for experienced marine keepers who can provide space, structure, and respect their attitude.