Species GuideBlue-spotted Boxfish
Blue-spotted Boxfish
Ostracion cyanurus
Ostraciidae family · Reef
Least Concerntoxic
A small, brilliantly-coloured boxfish with a rigid bony "box" body structure. Males are bright blue with yellow polka dots; females are brown with white dots. Found on the Gulf of Oman reefs. Releases ostracitoxin from skin when stressed — do not handle.
Species Stats
Max Length
15 cm
Max Weight
0.1 kg
Depth Range
2–30 m
Diet
Sponges, algae, worms, small crustaceans
Habitat
Coral reefs, rocky areas with coral
Local Name (Arabic)
أبو صندوق
Fun Facts
- 1
The box-like body is formed from fused bony plates — no flexibility in the trunk at all.
- 2
When stressed or killed, it releases a toxic mucus (ostracitoxin) that can kill other fish in the same aquarium.
- 3
Propels itself using only the dorsal, anal, and pectoral fins — the tail is only used for bursts of speed.
Found In
FujairahSharjah (east coast)Ras Al Khaimah (east coast)
Quick Info
FamilyOstraciidae
HabitatReef
EdibilityAvoid
CoastGulf of Oman
Dangertoxic