Fishsicle

This would certainly be a perfect time to replace it [your aquarium's heater] — if something goes wrong you'll either have fishsicles or bouillabaisse.

Fish can swim in the icy waters without turning into fishsicles because many of them make chemicals that keep their blood from freezing.

[…] The ice boat had carried them home with their baskets of fish. Elsa froze the fish and snuck them into the kitchens. "Fishsicles!" five-year-old Anna shouted in delight.