Community Fish Being Aggressive.

[westside]

I had picked up two more neons to round out my numbers, one either started dieing on the way home or as soon as i put him in because he never veered away from the top and was swimming like a football spiral.
so i took him out and put him in a bowl with tank water in it and he passed mere miutes later.
I am assuming it is the other new neon, he has been harassing the other neons, he has even gone after the platys and the blleding hearts, mean little guy.

I have him in a bowl for an hour now, he is giving me the evil eye.

Everyone else in the tank is behaving again. they were all fighting yesterday.

Now I know sometimes fish will attack another fish if it is sick, kill it off before it spreads.

So do I have an overambitious neon or could a different fish be sick, causing this one to freak out?

but like i said after removing the rest seem to be settling down already.

I may have to go buy a real small setup and keep this guy out for a bit.

 

[blitztidus]

He could be stressing from moving and taking out on everyone else

 

[clareriley]

It could possible be that your lfs had neon tetra disease in the tank.. you know this disease if the blue lines are broken. its easy to treat, just go to lfs and get some meds.