1) Family congridae 2) Fish family 3) Marine eels 
The Congridae are the family of conger and garden eels. Congers are valuable and often large food fishes, while garden eels live in colonies, all protruding from the sea floor after the manner of plants in a garden (thus the name). The family includes over 180 species in 32 genera. The European conger, Conger conger, is the largest of the family; ...
[n] - marine eels
family Congridae noun marine eels