1) Slim predatory swimmer 2) Snaky swimmer 
any of about 100 species of marine eels of the family Congridae (order Anguilliformes). Congers are scaleless eels with large heads, large gill ...
The Conger eel is a genus of marine eels characterized by a long dorsal fin beginning near the nape of the neck, immediately above the origin of the pectoral fins, and by having the upper jaw longer than the lower. The common conger eel grows to about three metres long and weighs more than 100 pounds. It is pale-brown above, greyish-white below, wi...Conger eel is London Cockney rhyming slang for inform (squeal).