blackfin

[ blak-fin ]
/ ˈblækˌfɪn /

noun

a cisco, Coregonus nigripinnis, found in the Great Lakes.

Origin of blackfin

An Americanism dating back to 1870–75; black + fin1
Also called blackfin cisco.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019