Hello everyone! I'm new here and before I ask my questions I thought it might be helpful if I told you just a bit about myself. I've been keeping freshwater fish for 9 years now and saltwater fish/reefs for 7 years. Right now my only salt tank is a FOWLR (also have 4 FW tanks) but I have been interested in having an octopus for many years, just never had the opportunity (as far as tanks go). So at the moment I have a 40g tall tank which is okay as far as gallonage if I'm not mistaken, but what about the length of the tank? Too short? (36" btw). My main question is about ID'ing the octo you buy. After reading some of the articles I understand that a positive ID can be tricky. I want to keep a bimac so how do I tell for sure that it's a bimac I'm getting?? Where do you guys and gals get your bimacs from?? Thanks for any and all help!