Many fish do have teeth.
Yes, but depends on the species, just like it does in salt water fish. Just because you can't see a fishes teeth doesnt mean it doesnt have any. Many fish have what are called phyringial teeth, which means they are set further back in their mouths/throat. Carp are a good example of a fish having this sort of dental arrangement. Good examples of freshwater fish with prominent teeth are piranah's, gar, pike etc!
a fish is small and it dose not have teeth. so that meens that sharks have sharp teeath fish dont have any
No, not all fish have sharp teeth. Some fish have teeth specialized for grinding or crushing their food, while others have no teeth at all and feed using other methods such as suction or filter feeding.
dolphins do use them. they use them to catch fish and to tear things apart.
that may depend if it its other fish for food
The Wolf Fish has 400 teeth which is 4 times the amount as the piranha fish.
scales, fins, gills, teeth, eyes, intestines, mouth, skin
Many fish do have teeth.
Fish have around 30,40,or 50 teeth depending on size.
hatchet fish have 55 teeth so they can eat there pray.
The kind of fish that has razor-sharp teeth is the barracuda.
Technically, no fish have the teeth of a human O.o that is why ther call humann fish but sesorusly no fish have teeth like humans since we have teeth for eat plants and animals and i dont think there are any onnavoir fish and to top it all no animals have teeth like our since we delvoped are teeth became weak like we need to brush them now or they will fall out every other animal is born with teeth to last how they should have have basicly unevolved in ways that like