Dont know man, when they all split it happend in the period of about two weeks, then it stopped and the one that i relocated (i only wanted one) started growing much fasted than the other ones which were located in a diffrent tank. they never split again, i then located all four in my main tank in order to brake down the tank they were in, they all did fine and never split again. I then gave one to tlscr, my two i have in my tank are doing great and i would strongly argue their species, however like i said its tough to tell as they are not huge by anymeans.