Well, my friend is getting ready for a move and has to take down his tank. The bad thing is that we just set it up a couple months ago. He's gotten rid of all his fish but one and wanted to know if I wanted his 3" Midas. My fear is even though my 5" JD is two inches longer, will the Midas eventually catch up and then dominate the tank? Currently there is only the Pleco and the JD in my 75 (the Green Terror never panned out, died the day after my friend got him home before i could go pick him up). Let me know what you guys think. Thanks.