I put in a terra cotta pot to see if they would take to that but they seem to prefer the ugly bridge I've been meaning to take out for a while, I guess I'm not now (always something that likes it). They seem to be digging out an indent under it as well as moving gravel with their mouths around, this is my firs experience with fish who don't leave gravel where you put it .
the male is Frank (after Frank Sinatra, AKA "old blue eyes" since he has very boldly blue eyes)
the female is Ava (after Frank's I believe second wife, it sounded the best out of the few wives he had)