Yellow Boxfish

(Ostracion cubicus)

Ostracion Boxfish are slow swimmers and should be added to large well established aquariums with plenty of room to swim. Plenty of rock work with ample supply of macro and micro algaes should be provided for grazing. Boxfish may release toxins if threatenedd, picked on or not healthy they should be removed immediately. Activated carbon will remove the toxins. A diet of meaty and algae based foods should be provided. Boxfish may be seen blowing sand looking for small invertebrates to consume. Avoid floating foods as Boxfish may accidently ingest air causing buoyancy issues. House with other peaceful tank mates. Juvenile, males and female Boxfish may exhibit color differences.

Yellow Boxfish are also sometimes known as the Spotted or Cube Boxfish. Occasionally seen in the aquarium trade. Yellow Boxfish are an overall yellow color with blue to black spots, adults are generally a dark yellow with dark spots. Yellow Boxfish can grow to almost 18".

We recommend a minimum aquarium size of 250 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: DietFrozen FoodFrozen Food DietHerbivoreHerbivore DietLive FoodLive Food
  • Habitat: HabitatPlantedPlanted
  • Light: LightHighHigh