does anyone know how to sex these cool fish? I have 2 unsexed fish, can't post pics due to the fact that I'm doing this from my phone, will get some up as soon possible, but they are both about 6-7 inches. what size do they breed at and what are the conditions they prefer? they are currently in a 70 gallon planted tank with 60 other small fish (tetras,barbs, loaches, eels and a pleco) any info, other than about my tank being overstocked, is welcome