Two-stick stingfish – Inimicus filamentosus

The Two-stick Stingfish, scientifically known as Inimicus filamentosus, is a fascinating and venomous fish species found in the Indo-Pacific region.

Description & Characteristics

This species is relatively small, reaching a maximum size of 25.0 cm. It possesses a distinctive and somewhat intimidating appearance, characterized by its flattened, angular body and a prominent, spiny head. Its coloration varies, often displaying a mix of browns, grays, and yellows, effectively camouflaging it against the rocky seabed where it typically dwells. The Two-stick Stingfish’s most notable feature is its venomous spines, located along its dorsal, anal, and pelvic fins. These spines are capable of delivering a painful and potentially dangerous sting, making this fish a creature to be respected.

Habitat and Occurrence

The Two-stick Stingfish (Inimicus filamentosus) thrives in a variety of marine habitats, including the subtidal, sublittoral, and infralittoral zones. Its range extends from the lower limit of the intertidal zone to the shelf edge at approximately 200 meters water depth. It is thus considered a neritic species, primarily found in the shallower waters over continental shelves.

Taxonomy

The Two-stick Stingfish (Inimicus filamentosus) is classified within the Class: Teleostei, Order: Perciformes, and Family: Synanceiidae. This family, known as the stonefishes, comprises some of the most venomous fish species in the world. The Two-stick Stingfish shares this distinction, demonstrating the potent nature of this group.

Feeding

The Two-stick Stingfish (Inimicus filamentosus) is a carnivore with a diet consisting of smaller fishes, crustaceans like shrimp and mysids, and other living food items. Its ambush predator strategy relies on its exceptional camouflage to remain undetected, then striking with a swift and powerful attack on unsuspecting prey.