because molly seeary told them to
They will co-exist but Angel fish like their water soft, acid and around 80F and Mollys prefer their water hard, alkaline and about 75F.
If you are asking about the Black Ghost Knife fish they are natural predators and their prey is any fish small enough for it to catch and kill. They also have the ability to electrocute a fish to stun it. They will kill neons and guppies but mollys may be a bit big for them.
fish
It is about to die or it is old or weak
it eats other fish
They eat you when your'e sleeping >:)
about 3-4 pinches of food. do you mean silver fish? because they eat paper.
humans
they eat anything that they can find under the water where they live.
stuff such as dried meat, silver berch barck, black moss that grows on rocks, and other hunted animals and fish
They eat fish and other things.
The rules of successfull fishkeeping are :- 1 inch of fish needs at least 1 gallon of water. (A Molly is at least a 3" fish) :- Every tank needs a fully cycled filter running permanently. :- Every tank needs at least 50% of its water replaced every week. Mollys need to be kept at around 75F in neutral to slightly alkaline water pH 7. to 7.2 . One teaspoonfull of aquarium salt per gallon of water will also be good for Mollys. Mollys should be fed as much dried food as they will eat in 15 minutes each morning and evening. If you follow the above basics your Mollys will live a reasonably happy life. If you miss out on any of the above I can guarantee that the fish will be constantly getting sick and will live a shortened life span.