Buys fish that hide...lol havent seen a few since purchase(BGK and Toadfish)...(i have just really have to look for them) My girl says you only buy fish that we never see..lol
I get rid of the ones that hide. Its a waste of tank space for me. I recently took in a Jack Dempsey to a LFS because it hid all the time. Sad because it was a beauty.
My smaller Violet Dragon Goby used to hide except for feeding time. But after putting in black carib. sand, he swims around pretty often, especially if I walk by! I really think it didn't like the lighter colored sand.