BoxfishesOstraciidae

Boxfishes (Ostraciidae) are small to medium-sized bony fishes with distinctive box-like bodies. Their bodies are encased in a rigid, armor-like carapace formed from fused hexagonal or pentagonal plates, which serves as a primary defense mechanism. This group includes species reaching up to 45 cm (18 in) in total length, featuring compact bodies, small fins, and a short, downturned mouth. Coloration varies widely among species and with age; juveniles of some species display bright yellow with black spots, while adults often appear mottled brown or grey, adorned with intricate patterns.

These fishes inhabit sheltered lagoons, inner reefs, and rubble areas, typically living at depths from 1 to 40 meters (3-130 ft). Their movement is slow and deliberate, propelled by their small pectoral fins, which contributes to a somewhat clumsy appearance. Adults are typically solitary or found in pairs, though juveniles may form small groups. Boxfishes are omnivorous, feeding on algae, small invertebrates, and tiny crustaceans. When stressed or injured, they can secrete potent skin toxins, including tetrodotoxin, as a defense mechanism. They are generally common throughout appropriate 🌊 Red Sea habitats.