How many letters does the top answer for “very small northern fish; forage for sea birds and marine mammals and other fishes” have?

The most common answer is capelan (7 letters).

Crossword clue: very small northern fish; forage for sea birds and marine mammals and other fishes

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

capelan 7 letters wn-def

very small northern fish; forage for sea birds and marine mammals and other fishes

capelin 7 letters wn-def

very small northern fish; forage for sea birds and marine mammals and other fishes

caplin 6 letters wn-def

very small northern fish; forage for sea birds and marine mammals and other fishes