denver

I have a molly fish that had developed a black spot on her body and fin. Does anybody know what that is? Also at times it looks like my molly fish is pregnant. her stomach becomes very big, but then the next day, it is back to normal and there are no babies. why does her stomach continue to expand, if she is not pregnant?

fish_r_friend

its pregnant the fry probably got eaten by their tank mates

Isabella

Or it may be a swim bladder problem?

newbie101

My pregnant guppy (she died today no babies yet! ) had a spot on her anal fin too! I thought it was just a marking but yours has one too?

Jon

live bearers anal fin spots get darker and larger when they get more pregnant

newbie101

ah ok
i thought only the gravid spot grew bigger not a fin spot?