ichthyophage

From the Ancient Greek ἰχθυοφάγος (ikhthuophágos, “fish-eating”), and substantivised as a plurale tantum proper noun: “the Fish-eaters, the Ichthyophagi”; reinforced in the general sense (“that which consumes fish”) by the English ichthyo- (“fish”) +‎ -phage (“eater”).

ichthyophage (plural ichthyophages)

1. That which consumes fish; any fish-eating thing or (more rarely) person.
2. (capitalised as “Ichthyophages” and functioning as a plurale tantum proper noun) Anglicisation of Ichthyophagi

• ichthyophagous
• ichthyophagy