yeah, 5 gals is WAY too small. fish commonly get aggressive when they don't have enough space to swim and act normally. yet another reason why overstocking and too small a tank is bad.
ive seen alot of rtbs's very stressed out ...u can tell by its color in its tail...
the brighter the better =)
ive seen alot of dark colored tals..and the lady said at the lfs its from them being transported n stressed....i went back a week later and most were dead...
my lfs does carry quality fish and has quality tanks but i thin kthat was just a bad rtbs strain..
u want something like this =)
see how bright my lil guy is?
if ur reading this can anyone recognize that in the photo?
make sure ur tank has caves and alot of cover for other fish to hide just incase ur rtbs is really aggressive