my daughters fish

Some fishes are not meant to be shared in an aquarium and i guess some of your fish are like that. Separate the fishes before the other ones will kill the other types. It would be best if you ask a pet shop about them.

Unfortunately it doesn't sound good for your fish. If you can take that fish out and keep it someplace else maybe it'll be okay, but I'm not hopeful. Doesn't sound like your other fish are willing to accept a new fish. Probably not a good idea to get any other fish until you can ask someone about the kind of fish you have now.

That's really sad,wish the little one won't die. Some fish shouldn't be mixed with other species of fish. Maybe you need to asks the pet shop where you bought the new one and asks what's compatible with those existing fish in your aquarium.