i think my most intellegent fish was a (RIP now ) red kamfa flowerhorn-his name was Barnabus the Terrible.I could actually play hide and seek w/ him using a peice of cardboard taped to he side of his tank.Id hide behind the cardbaord ,and peek out from either the top or two sides-he'd do the same .If we happed to come out at the same time on the same side -hed get real excited and shake and splash-then want to do it all over again and again (lol he had way more stamina then me -id be over it after 5 or six rounds) - i miss this fish .he had sooo much quirks and personality.