They are also listed in shops as fireworks rasboras too, i saw some in an LFS today, very nice little fish, im thinking school of these in the free 5.5 gallon cube? says max size is about 12mm or something right? so thats about half an inch? Im guessing these would be ok in that tank, they didnt see like fast swimmers either in the shop. Just need the tank now......*looks at watch*