No they do not.
what cant a fisher eat
The baby fish king fishers do eat the algae.
No, they eat only fish.
terrestrial insects and frogs
Japan. All they eat is fish!!!
Japan. All they eat is fish!!!
Yes
Despite it's name, a Fisher Cat (Martes pennanti) is not a cat, but a marten or mustid. It does not eat fish.
Yes, all of those organisms can eat a porcupins
Snakes, cats, racoons
They always live in and around water, and they primarily eat fishes. While it is related to the American Marten, it is often errantly (wrongly) referred to as a 'fisher cat'. It really is a type of a weasel.