I think my platy hotaru is being aggresive or something.A few weeks ago I noticed she was continuingly banging in to my other platy and she seemed quite stressed out.I did my best to stop it.She sometimes chases her if she gets to close or she might follow her and then chase her.With the neon tetra.When It came near,she just sorta scared him/her off.I cant return her becasue I've had her for a LONG time-Thanks

I had a platy behave like that once, with the bumping into other fish. It turned out she had ich and was trying to use her tankmates to itch herself.

That probably doesn't help you any, but I thought I'd at least tell you you're not alone.

is she pregnant?

No,I dont think she is.Both are female by the way.I'm sure of it.When she bumps like taht theres a clicking sound,=.Hmm...

qT it if it becomes a problem, is the water okay?