LOL I have a fish who does the hiding thing too! The color pattern for my tank is green, black, and red. This fish is about the same size as my betta, if not slightly larger, and mostly white (minus a black stripe here and there). He just disappears!!! Eventually I'll see them swimming with each an hour or so later, but I have NO idea where he goes. I'll walk all around the tank. I can find my not even 1 inch long pleco behind the filter, BUT I CAN NEVER FIND THIS FISH!!!