Black-Belly Triggerfish (Rhinecanthus verrucosus) Care Guide
Rhinecanthus verrucosus is an Indo-West Pacific triggerfish of reef flats and lagoons, recognised by a large black belly patch.
Overview
Rhinecanthus verrucosus, the blackbelly or blackpatch triggerfish, is a marine fish of the family Balistidae. The upper body is pale brown and the underparts white, with a large black spot on the belly anterior to the anal fin and a dark streak below the eye. FishBase records a maximum total length of 23.0 cm, with a common length of 19.0 cm.
Taxonomy
- Family: Balistidae
- Genus: Rhinecanthus
- Scientific name: Rhinecanthus verrucosus
- Described by Linnaeus in 1758
Habitat
The species ranges across the Indo-West Pacific from the Seychelles and the Chagos Archipelago through northern Australia to Vanuatu, north to southern Japan. It inhabits subtidal reef flats and protected lagoons, favouring rubble-algal habitat, and is often found in loose aggregations. FishBase gives a depth range of 1 to 20 m.
Tank requirements
- Minimum tank volume: 400 L (about 106 gal)
- Temperature: 24-26 °C (75-79 °F)
- pH: 8.1-8.4
- Carbonate hardness / GH range: 8-12 °dGH
- Lifespan: 10-20 years
Diet
Rhinecanthus verrucosus is carnivorous, with a FishBase trophic level of 3.5. It feeds on benthic invertebrates. In captivity it accepts meaty marine foods offered about twice daily.
Compatibility
This is an aggressive, territorial species that swims in the middle water column and does not school; it defends its territory against other triggerfish. It is not reef-safe and is best kept with other large, robust fish such as large angels and large tangs. Ornamental shrimp, snails, crabs and small fish should be avoided.
Breeding
Rhinecanthus verrucosus is oviparous and forms distinct pairs. Captive breeding is regarded as expert-level and is rarely achieved in home aquaria.
Conservation status
IUCN Red List: Least Concern (assessed 2022).