Crosshatch Triggerfish (Xanthichthys mento) Care Guide
Xanthichthys mento is a Pacific triggerfish of oceanic islands and reef drop-offs, feeding on zooplankton and considered relatively peaceful.
Overview
Xanthichthys mento, the crosshatch or redtail triggerfish, is a marine fish of the family Balistidae. The body bears a crosshatch pattern, and the face shows blue lines; the tail is reddish. FishBase records a maximum length of about 30.0 cm.
Taxonomy
- Family: Balistidae
- Genus: Xanthichthys
- Scientific name: Xanthichthys mento
- Described by Jordan & Gilbert in 1882
Habitat
The species occurs in the Pacific Ocean in an antitropical pattern, from southern Japan and the Hawaiian Islands to southern California, the Revillagigedo and Clipperton islands, Easter Island and the Pitcairn Islands. It is found mainly around oceanic islands and near reefs along continental coasts, forming schools in seaward reefs above drop-offs. FishBase gives a depth range of 6 to 130 m.
Tank requirements
- Minimum tank volume: 500 L (about 132 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
Xanthichthys mento is a zooplankton feeder, with a FishBase trophic level of 4.0. In captivity it accepts meaty marine foods offered about twice daily.
Compatibility
This is a semi-aggressive, non-schooling species in the aquarium that swims in the middle water column. As a planktivore it is among the more peaceful triggers, but it is kept with caution alongside small invertebrates. It suits other large, robust fish such as large angels and large tangs; ornamental shrimp, snails, crabs and small fish should be avoided.
Breeding
Xanthichthys mento is oviparous. Males establish spawning territories; only females tend the eggs while both parents keep guard. Captive breeding is regarded as expert-level and is rarely achieved in home aquaria.
Conservation status
IUCN Red List: Least Concern (assessed 2009).