From Old Irish íasc.
eeast m (genitive singular eeast, plural eeastyn)
Bioys da dooinney as baase da eeast.
― Life to man and death to fish.
She dooghys eeast eh dy snaue.
― The nature of fish is to swim.
Ta'n awin plooghit lesh eeast.
― The river is teeming with fish.
Ta'n eeast shoh snaue er eaghtyr ny marrey.
― These fish swim on the top of the sea.