Tautog n. : An edible labroid fish (Haitula onitis, or Tautoga onitis) of the Atlantic coast of the United States. When adult it is nearly black, more or less irregularly barred, with greenish gray. Called also blackfish, oyster fish, salt-water chub, and moll.

Example:
How has the Tautog fishing been in Cape Cod Bay this summer?

Taxonomy
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Defination from the web:
tautog or blackfish (tô'tôg', -tŏg', tô-tôg', -tŏg'), Tautoga onitis, is a fish of the wrasse family found in salt water from Nova Scotia to South Carolina. ... Popular among fishermen, tautog have a reputation for being a particularly tricky fish to catch. ...