Longhorn Cowfish

(Lactoria cornuta)

Lactoria Cowfish should be added first to large aquariums with ample open swim room as they are slow swimmers and become quite large. Provide rocky areas and a thick sand bed. Cowfish might be slightlyly sensitive to aquarium lights when first added, monitor for light sensitivity. They may also be difficult to acclimate to aquarium diet, try offering live, enriched meaty foods such as Black Worms and Brine or Glass/Grass Shrimp. Cowfish will also disturb sand bed by blowing it trying to uncover prey. They are constant grazers and have also been known to consume Cyanoacteria, Slime algae and other types of marcro and micro algaes. Provide a diet rich in meaty and algae based foods multiple times daily. Do not offer any floating foods as Cowfish may ingest air which can cause buoyancy issues. Cowfish may release a toxin if excited or threatenedd. Always remove Cowfish if being picked on or in poor health. Activated carbon will remove the toxins.

Longhorn Cowfish are also sometimes known as the Horned Boxfish or the Triangular Boxfish. In the aquarium trade, Longhorn Cowfish are occasionally seen and are considered one of the more unique and interesting species of fish due to their distinctive appearance and behavior. Longhorn Cowfish have a box-like body with a yellow-brown coloration and a series of blue spots on their sides. They have a long, tube-like snout and two bony horns protruding from the front of their head. They can grow up to 18 inches in length.

We recommend a minimum aquarium size of 125 gallons or larger for this species.

Water conditions: Salinity 1.020 - 1.025, Temp (F) 72 - 78, pH 8.1 - 8.4, Alkalinity 8 - 12 dKH

  • Care: CareModerateModerate
  • Behavior: BehaviorSocialSocial
  • Diet: DietLive FoodLive Food DietFrozen FoodFrozen Food
  • Habitat: HabitatPlantedPlanted HabitatReefReef
  • Light: LightHighHigh