• Presence of single dorsal fin.

• Bottom dwelling ovoviviparous fish.

• Head is broad, rounded and dorsoventrally flattened.

• A pair of electric organs is present.

• Electric organs are made of electroplates (Hexagonal muscle cells).

• Electric organs generate electricity and immobilize the prey – organ of offence and defense.

• Presence of a pair of clasper.

• Pectoral fins are continuous with the sides of head.