ok we're talking bout male fish here so i have two pineapple and one red albino sword in my tank and the two pineapple sword constanly flare and show off to eachother but totaly ignore the red and he ignores them i also have one black mollie and one creamsicle and they just ignore each other so my question is do same color fish stick together and ignore other color fish of the same species? just a quick note my black molly ignores the male but not the females and ive noticed this more with the swordtails not the mollys i have a white molly that would flare and chase a black molly all the time