Yes, someone knows what to do.
Many fish will start to eat another fish if that fish is sick. If your fish's partner is sick, he will eat her until she is dead. I know it's weird, and the only reason I can think of as why they would do that is because they dont want the other one to suffer as much? My fish ate my other fish cuz it was sick.
A sick one.
how would any one know that?????
No, you can't get sick because fish disease can not transfer to a human. Therefore just wash your hands properly after handling a fish or touching one.
A very sick one. All fish are able to swim. Otherwise, It would not be one!
you know that one with the puffer fish that eats that fish yea you know
A fish is sick or something is wrong with the water.
They will usually do this if they sense that a fish is sick or is dying. Usually they will try to eat it
Skate or ray fish have no bones. Only cartilage. I don't know about any freshwater ones one salt ocean.
No they are not. If they're yellow for a long time they might be.
You could get a betta fish but if you get one it would have to be in a different tank than any other fish (as many people know the betta would eat ANY other fish). You could get African Chichlids they are really pretty and social, neon tetras,glo fish.
I do not know myself, but I have some stick insects myself and one of them spat out green slime. Maybe this shows he is sick????