When I got up today, i saw my three cories chasing eachother, and any other fish that came near them! one cory (looks like) it gave up and went back down to the bottom, while the other two were at the top fighting! the like latched mouths; did all kinds of back flips and stuff! it was really crazy! i waz a little worried at this piont, be they all seem to be happy with eachother now. were they just playing i know this sounds odd! but im quite confused by it too. Anyone know what this is, and what is casuing it most likely?