When one of my commets chase the other is it breeding bavior or there just fighting

when you say their chasing are they chasing each other
or is one of them more dominant over the other?

like near and attacking

only one of them chasing other one

I cant tell if there girl or boy

not chaing around the stomach
then its probably a bully fish
how long has it been going on?
if hes attacking you better remove him
because he will damage fins, scales etc.
it might just be that he is really territorial

well hes not attacking now hes just near the other comet

but i believe they are girl but they maybe fighting because they have no white spot or star on them they dont fight now

not really
goldfish can live on their own, live with fish of the same sex
and be quiet happy
the only reason i can think of for them to fight is because they are
either territorial(maybe not enough space?) or have an agressive temperament
are they nipping each other occasionally or is it more violent?

not vieloet and they dont do anymore
well they stop now

ok
maybe they were just playing around