what do you call those little black fish with the red and blue tails that are dangerous to keep around other fish?

ok so I have a ?.if you have a rednose pit(mom), and a blue pit(dad), and the puppy is black, what is it???

I keep finding random lil black bugs in my bed... I want to know what they... They are freaking me out.

Is a black molly can be grow to be a sailfin molly?plss answer

My dog has all this black stuff around his mouth and I would like to know what it is

What fish can live to be over 100?

I have hamsters and I just noticed little little roundish black bugs crawling on their tanks and little white bugs that look ...

What Should I Call My Fish When I Get Him/Her? What Do you think? It might be a white one or an orange one?

I know betas are fighting fish; I only have one by himself in it's own tank, nothing else but marbles and a water plant. - bu...

I have a female betta fish, that is approx...4-6 months old, she is in healthy condition, and is an active swimming fish. My ...

We have growing pests visiting and Staying at and around our place and I have no clue How to get rid of them. One is the Star...