Species Details

Details of Clown triggerfish will be displayed below

Clown triggerfish   

Common Name: Clown triggerfish, Bigspotted triggerfish
Scientific Name: Balistoides conspicillum
Local Name: Bis' rondu
Dhivehi Name: ބިސްރޮނޑު
Animalia  (Kingdom)
Chordata  (Plylum)
Teleostei  (Class)
Unknown  (Family)
Unknown   (Genus)

Clown triggerfish's description

The clown triggerfish is a small sized fish which grows up to 50 cm. Its body has a stocky appearance, oval shape and compressed laterally. The head is large and represents approximately one third of the body length. The mouth is small, terminal and has strong teeth. The first dorsal fin is composed of three spines, one of which is longer and stronger. It is erectile and hidden in a dorsal furrow. This set of dorsal spines composed a trigger system which is a characteristic from the family Balistidae. The second dorsal fin is similar in shape and size to the anal fin which is symmetrically opposed to it. The pelvic fin is reduced to a ventral protrusion. The background coloration is black. Half of inferior part of the body is marked with big white spots which are more or less round. The area around the first dorsal fin is crossed by yellowish sinuosities which draw like a network reminding the leopard's patterns. There is a yellowish ring around the mouth, which is surrounded by another fin white ring. A white stripe ride the snout just under the eyes level. The second dorsal fin and the anal fin are white and underlined with a yellow line at their base. The caudal peduncle has a yellowish blotch on its top part and has three horizontal sets of spiny scales. The caudal fin is yellowish in its center and has black margin. Juveniles have a black background coloration spangled with small white spots, the extremity of the snout and the base of the first dorsal fin is yellowish.

Clown triggerfish's facts

Did you know?

This fish “triggers” its fins to extend in order to lock itself into crevices.

Clown triggerfish's Behavior & Ecology

Lives in clear coastal to outer reef habitats and can be seen in depth range between 1m to 75m. Occurs in clear seaward reefs adjacent to steep drop-offs. A solitary species. Uncommon to rare throughout most of its range. Adults usually seen along deep drop-offs, swimming about openly and may retreat to caves when approached. Juveniles secretive in small caves with rich invertebrate growth.

Clown triggerfish's Feeding

The clown triggerfish’s diet consists of sea urchins, crabs, crustaceans and mollusks.

Clown triggerfish's Reproduction

Spawning occurs in patches of mixed coral rubble and sand on clear seaward reefs.

Clown triggerfish habitat

This species occurs solitarily in clear waters in coral-rich areas of outer reef slopes. Young individuals inhabit caves below 20 m on steep slopes and rarely occurs shallower (Allen et al. 2003, Randall 2005). The maximum standard length is 40 cm (Motomura et al. 2010).

Clown triggerfish threats

Harvesting of this species for the aquarium trade may cause localised population declines (Malsack 2017). Ongoing coral reef degradation may also impact this species.

Clown triggerfish's status