xiahaolong168;2564722; said:i believe male AND female get koks.
Rockbass6;2564618; said:Males tend to get the "hump" on the head your referring too, the females do not.
---XR---;2564746; said:i do not know of people who have selective bred midas for nuchal humps, but it's done in the FH trade. So i'm sure someone out there has done it to see how large a hump may get on a midas or another amphilophus, but if it's done, it isn't common.