reticulated pufferfish

This species can reach a total length of 45 cm. Its stout body is covered with small dermal spines over most of its surface, except around the mouth and the base of the fins. Its typical pattern consists of dark brown reticulated bands running along the body. The eyes are surrounded by incomplete or complete white rings. Like all Tetraodontidae, it has thick skin, fused teeth forming a robust beak, a single small dorsal and anal fin, and the absence of ribs or pelvic fins.

The reticulated pufferfish is typically solitary. Adults often remain motionless on muddy bottoms during the day, while juveniles take shelter in mangrove roots and may even venture into the lower reaches of some streams. The species primarily feeds on mollusks, corals, and other benthic invertebrates, but also consumes algae, seagrass, and even mangrove detritus. Its powerful jaws allow it to crush the hard shells and structures of its prey.

Arothron reticularis is an oviparous fish. Like other Tetraodontidae, the male excavates a circular nest in the sand where the female lays her eggs. Spawning may be synchronized with lunar cycles, resulting in gatherings. The eggs float or remain attached to the substrate until hatching, which occurs after a few days. The tiny, vulnerable larvae develop in open water before moving to coastal areas. In other species of Tetraodontidae, the presence of maternal toxins protects the young stages from predators, a phenomenon that may also apply to A. reticularis.