Besides negligent owners, goldfish (especially those who live in outdoor ponds) may fall victim to cats or birds ( IE heroin, seagulls, pelicans).
Yes
they often fall or have a disturbing chase
Predatory fish and birds will kill heaps in the wild but most goldfish are killed by people who don't look after them properly.
go to the vet ASAP
They've not got muscles to keep them up straight. Its only the water which is holding them up and making them move.
to cure these problems, you should go to your local pet shop, tell them about the problem and the will give you special treatment
Goldfish are cold water fish while the others are tropical, so no they won't as depending on what type of tank you put them in, one group will die.
What are mosquito predators? people are the predators
Predators are like hunters. The predators eat their own prey. Predators catch their prey with their sharp nails.
4 predators and 4 prey that the predators have killed for their dinner!4 predators and 4 prey that the predators have killed for their dinner!4 predators and 4 prey that the predators have killed for their dinner!4 predators and 4 prey that the predators have killed for their dinner!
Wolves are apex predators themselves and have no predators.
Tigers are top predators. They do not have any natural predators