Heteranthidae
The Heteranthidae are a family of marine fish in the order Perciformes, belonging to the suborder Scorpaenoidei. They are commonly known as “sea robins” due to their distinctive appearance, with elongated pectoral fins that resemble the wings of a bird. This family comprises a single genus, Heteranthias, with approximately 15 species.
Characteristics
Heteranthid fishes are characterized by their slender, elongated bodies, with a compressed head and a slightly rounded snout. They have a single dorsal fin with a distinct anterior portion composed of spines, followed by a posterior portion with soft rays. Their pectoral fins are typically long and narrow, extending beyond the body. They have a small mouth with a terminal position, equipped with small teeth. Their scales are ctenoid, meaning they possess tiny, comb-like teeth.
Habitat and Distribution
Heteranthids are found in tropical and subtropical waters of the Indo-Pacific region. They are typically associated with coral reefs and rocky shores, inhabiting depths ranging from 5 to 100 meters. They are often encountered in caves, overhangs, and crevices, seeking shelter and protection.
Diet
These fish are carnivorous and primarily feed on small invertebrates such as crustaceans, mollusks, and worms. They use their elongated pectoral fins to hover and maneuver among coral reefs, allowing them to capture prey with their small, but sharp, teeth.
Reproduction
Heteranthids are oviparous, meaning they reproduce by laying eggs. The males are known to guard the eggs until they hatch.