no some can make u sick
They eat vegatation in the water and some fish eat other fish. Many Freshwater fish also eat insects and freshwater crustaceans.
All freshwater fish don't mind alage at all. Many freshwater fish eat alage like plecos, and loaches. Which you can get at almost any pet store.
yes but not all species
Yes. Cat fish and essentially all freshwater fish have minimal levels of mercury.
of course not beavers eat fish/dead things but they only eat gold fish and cray fish is not a such thing its cat fish
Plecos love to eat fresh water fungi. I had a lot of fungi in my freshwater fish tank and within 5 months all on the fungi was gone when i got a pleco
yes it can it can also eat fish from the sea
I think they eat little bugs.
Trots.
They eat fish and other small animals such as birds. They are top freshwater predators.
They only eat salt water fish.
of course, all saltwater & freshwater fish can eat frozen bloodworms.