here we go!!! ok so i don't ness base my sexing of GTs only on humps......a female normally won't develop one but a submissive/non dominant male aslo may not really show any signs of a hump. really dom males like to show off and it also has to do w/ tankmates and other factors......Skirmish is your GT alone in that tank??? if so that is prob why he has such a large hump at such a small size. he knows he a H.N.I.C. Head. N***ER. IN. CHARGE!!! i really look at their dorsal/anal fins, males usually have longer more whiplike dorsals and their anal fins are longer almost even w/ the tail fin....females however don't have the longer fins usually in my experience and i have breed a couple batches years ago.....also females tend to be darker more grey i guess.. ok well here are some crappy pics i just snapped i didn't feal like setting up the tri-pod so bear w/ me.......also i threw in some new pics of the EBJD........Ak coral maniacs wants 115 wompom!!! i told him i payed 25 for mine and he got all butt hurt tellin me i prob have bad genes and it's gonna turn black and die...... i then pointed out that his Clown loachs had ich and his red devil pair had fungus......he just shut up and got really busy after that......to busy to answer anymore of my Qs what a tool...heard he is gettin sued or sumthin along those lines