I'm sorry but I am unfamiliar with a 40 "B". What is that? I was under the impression that the pyxie would not be full size in a year. Is that incorrect? If it is going to be full size in 9-12 months I would rather pick up a 100 gallon with stand on Craig's list. I already have a 150 gallon Fluval canister filter ready to go. The frog is calling at night. It's too small to be sexed, but it sounds just like the call John has posted on the care sheet, not sure if the females can make this noise when young or just males? Thanks so much for the info...obviously I need the help!![]()