By performing an experiment
It is poo and will drop off eventually.
you cant. you have to remove the fish before it does further damage to other fish.
yes
female mosquito fish have black dot in front of their butt.
my fish also does that. Is your fish a male or female? If it is a female it is probably pregnant. Hope that helps!
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.
The black koi fish is representative of the male gender, the sun and evil. Where the white is representative of the female gender, the moon and goodness
Yes .It is called a gonopodium ,if you can't spot it you should wait for it to get older and get a female and when he is courting as it will come out and move to the side and if they are mating then you will see it aswell .But if you dont want fri(babies)i wouldn't get a female because they breed like rabbits.
It will either flee or hide. Probably it will do both.
No, they are different types of fish, but since they are both livebeares, they can interbreed.
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