
Xanthichthys mento
Family: Balistidae ยท Triggerfish
Also known as: Blue Cheekline Triggerfish, Crosshatch Trigger
The Crosshatch Triggerfish is widely regarded as the crown jewel of the triggerfish family and one of the most coveted species in the entire marine aquarium hobby. Its body is adorned with a stunning crosshatch pattern of dark lines over a base color that differs dramatically between sexes. Males display a brilliant yellow body with vivid blue markings on the face and a striking red-edged tail, while females exhibit a more subdued but equally beautiful purplish-gray body with the same distinctive crosshatch pattern and yellow-edged fins. This sexual dimorphism makes a male-female pair an exceptionally attractive display.
Unlike most triggerfish species that have earned a reputation for aggression and destruction, the Crosshatch Triggerfish belongs to the genus Xanthichthys, which are open-water planktivores rather than reef-crunching omnivores. This fundamental difference in ecology translates to a remarkably well-behaved aquarium resident. Crosshatch Triggerfish are considerably less aggressive than other triggerfish, do not rearrange rockwork, and pose far less threat to invertebrates. They spend much of their time swimming in open water, hovering in the current to pick zooplankton much as they would on the steep outer reef walls where they naturally occur.
The primary barrier to keeping this species is its price tag, as Crosshatch Triggerfish are among the most expensive commonly available marine fish due to their deep-water habitat and difficulty of collection. Specimens are typically collected at depths of 60 to 200 feet along steep reef drop-offs, requiring specialized dive skills. Once acclimated, however, they are remarkably hardy and long-lived fish that reward their keeper with stunning coloration, active swimming behavior, and an engaging personality.
Crosshatch Triggerfish are planktivorous carnivores that feed primarily on zooplankton, small crustaceans, and fish eggs in the wild. In captivity, offer a variety of frozen mysis shrimp, enriched brine shrimp, krill, chopped shrimp, squid, and high-quality marine pellets. Their planktivorous nature means they are less inclined to crush hard-shelled invertebrates than other triggerfish. Feed two to three times daily.
The Crosshatch Triggerfish is one of the most peaceful triggerfish species and is compatible with a wide range of tankmates including tangs, large wrasses, angelfish, and other community species. It is far less aggressive than most triggerfish, though it may occasionally display territorial behavior toward similarly shaped fish. As a planktivore, it is less likely to attack ornamental invertebrates, though small shrimp may still be at risk. Can be kept as a male-female pair in larger systems.
Check CompatibilityCrosshatch Triggerfish are sexually dimorphic, with males being more colorful than females. In the wild, males maintain haremic territories along deep reef walls. Spawning occurs in nests on the substrate. Captive breeding has not been achieved in home aquariums, though their willingness to pair up in captivity suggests potential for future success.