Casio – Yellowtail

Yellowtail Casio Care Tips:

Minimum Tank Size:  100 Gallons

Max Size: Up to 60cm (2′)

Diet: Carnivore

Temperament: Peaceful

Lifespan: Unknown

Scientific Name: Caesio Cuning

Other Common Names: Redbelly Yellowtail Fusilier, Yellowtail Fusilier, Red-bellied Fusilier or Robust Fusilier

Coral Safe: Yes

Invertebrate Safe: Yes

Approx. Purchase Size:  Small: 2.5 – 3.5 inches Medium: 4 – 5 inches

The yellowtail casio, scientific name Casio Cuning, is a peaceful fish. Their minimum tank size is 100 gallons. Yellowtail casio’s can grow up to a maximum size of 2’, however that size is never reached in captivity, a maximum size of 10-12” is more common and that will take many years to reach that size. The yellowtail casio is a carnivore and should be fed small pieces of frozen food such as mysis or brine shrimp. Casio’s are schooling fish. It is possible to keep them alone, in pairs or in groups as long as there is adequate space. Yellowtail casios are reef safe with caution. They will not bother coral, and most invertebrates. It may prey upon shrimp that will fit in its mouth. Once the yellowtail casio comfortable will be seen swimming out in the open throughout the entire tank. The yellowtail casio will hide and sleep in crevices in the rocks. The yellowtail casio is also referred to as the Redbelly Yellowtail Fusilier, Yellowtail Fusilier, Red-bellied Fusilier or the Robust Fusilier.