How many letters does the top answer for “eating, or subsisting on, fish.” have?

The most common answer is ichthyophagous (14 letters).

Crossword clue: eating, or subsisting on, fish.

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

ichthyophagous 14 letters web-def

Eating, or subsisting on, fish.

eating bread; subsisting on bread. 50% similar → panivorous

eating, or subsisting on, filth. 50% similar → rypophagous

feeding or subsisting on fish. 50% similar → piscivorous