Bought this boy last night, any ideas on what color and tail type he will be when he de-stresses? He was marked HM, I suspect DT or Super Delta. He won't flair though, just ran away the one time I showed him a mirror
His fins looked like that when I got him, his cup was probably the dirtiest I've ever gotten a betta in. I put him back in a cup to get the picture, don't worry :) He got a 10 gal hex with a heater and filter.
They usually adapt very quickly. But if the betta was suffering in the store, it may take longer (adapting). IMO his color has begun to brighten up (in the picture). Copper is my favorite color - they come in various shades and will often show different colors according to light angles.