I dont know that much about this maybe mouth?
lungs and a heart i think
no, wild fish must get sick if they eat fish food
The function of the small intestine is the structure that helps the chewed up food getting the minerals and vitamins out of the food and into the blood or body.
The scales, but if not i dont have a clue:L.
The Esophagus
by getting food
eg of body-building food are milk,fish,peas,nuts,etc
The Wrasse fish clean the mouth and body of the bass fish which provide the wrasse fish food.
Many like hands, tongue, body, beak, poisonous fangs, sharp teeth, skin, tentacles, and many things.......:)
No. You won't get scales from eating fish food. But it probably isn't very good for your body.
the penguins go in the ocean and catch fish in there mouth to get food
mouth or gills