someone got tired of looking at the 50 gallon empty tank while i tried to find my female johanni's. he brought home a bag with 2 each serape's, head and tail lights, harlequin, and glow light's. i had not researched them so i don't know much about them. i am going to move them to the 20 gallon when i find the girls. i like the serape's the best. i am not much of a tiny fish person and the others are really tiny.