小毒鮋屬

Leptosynanceia is a monotypic genus of ray-finned fish belonging to the subfamily Synanceiinae, the stonefishes, which is classified within the family Scorpaenidae, the scorpionfishes and relatives; its only species, Leptosynanceia asteroblepa, is called the mangrove stonefish in Malaysia. This species native to the brackish and fresh waters of Southeast Asia. This species grows to a total length of . This species is an extremely dangerous fish whose venom can cause a human to die within 1 to 2 hours after contact. The pain caused by the venom is described as "agonizing".