Fin's Fish Guide
The Yellow boxfish (Ostracion cubicus) is a saltwater fish of the family Ostraciidae that grows up to 45 cm.
Description
The yellow boxfish is a striking reef fish of the boxfish family (Ostraciidae) from the Indo-Pacific. The species grows to about 45 cm and has a nearly cube-shaped, bony-plated body; juveniles are bright yellow with black spots, while adults become duller yellow-brown to blue-grey. It inhabits coral and rocky reefs and moves slowly with its pectoral and dorsal fins. As an omnivore it eats algae, sponges, small invertebrates and worms. When stressed the skin secretes a toxin (pahutoxin) that can kill other fishes in an enclosed space; for this reason the species is not eaten. When handled it is harmless to humans.
Frequently asked questions
How do you recognise the Yellow boxfish?
The Yellow boxfish has an irregular in shape body, is mainly yellow-gold and shows a spots pattern. Cube-shaped body armoured with bony plates; secretes the poison pahutoxin when stressed.
Where does the Yellow boxfish live?
The Yellow boxfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-Pacific; coral and rocky reefs.
How big does the Yellow boxfish get?
The Yellow boxfish grows to a maximum of about 45 cm.
Is the Yellow boxfish dangerous to humans?
No, the Yellow boxfish is harmless to humans. None required: this species is harmless to humans.
Is the Yellow boxfish edible?
The Yellow boxfish is not usually eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Ostracion
More from the family Ostraciidae
Want the complete picture on the Yellow boxfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Yellow boxfish is one of 12,519 species in the app.