I have a pair from Jeff Rapps and myself and Blue Demp are testing some theories as far as the hump is concerned. From what we are seeing males seem to have larger humps without the females or when around other fish(Midas or otherwise). My Male's hump varies and it seems the more content him and my past males have been, the smaller the hump has been. My female does have a hump that stays consistent while my past Rapps female did not. The male in my avatar's hump was largest without a female and when he was alone. Then when I bred him it shrunk as he seemed to be more content as a father. I Think it is a combinations of things. Genitics and Temperment at the time would most likeluy be the biggest factors. We got a face book group and I think I am going to start the study harder on there. Feel free to join. Here is the most rescent Video. Male is now over 7" and female is 6 1/2". I am most likely going to seperate them because I want them to grow more and for his hump to develop more.
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