Family Mastacembelidae(Spiny eels) 3 genera 86 species worldwide, 1genus with 1 species in Korea. Primary freshwater. The Mastacembelidae are a family of fishes, known as the spiny eels. The Mastacembelids are part of the Order Synbranchiformes, the swamp eels. Primarily tropical; subtropical. Distribution: Africa, through Syria to Malay Archipelago, Korea and China.
These fish have an eel-like body. Very characteristic of this group is the long nose appendage with two tubulated nostrils. Mastacembelids have a series of well-separated dorsal spines on their back, hence the name of their family, spiny eels. Usually 9-42 isolated spines preceeding dorsal fin of 52-131 soft rays. Usually 2 or 3 spines in anal fin; soft rays 30-130. Rostral appendage fleshy. Scales small. Basisphenoid lacking. About 66-110 vertebrae. Some of these fish(Mastacembelus erythrotaenia) can reach a maximum length of 100 cm. Spiny eels generally inhabit soft-bottomed habitats in fresh and brackish water. Some species burrow in the substrate during the day or for certain months and have been found buried in soil in drying periods. Some species burrow occasionally. In some areas these fish are regarded as food fish. Several species of Mastacembelidae are aquarium fish, such as the fire eel(Mastacembelus erythrotaenia).
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