I have a 28 gallon euro aquarium with marineland stealth pro 150w heater, penguin 150 bio filter, sand substrate, 4 big black stones, glass canopy and 17w strip light. Right now it is cycling with 1 female veiltale betta and 3 albino Cory catfish. I plan to keep 6-12 Cory cats. So I want like a fish that will be like the star of the tank lol. Like really unique and colorful that will stand out from the corys and betta. It has to be one that is extremely peaceful and I can only get 1 so It has to prefer living with other species rather than it's own species. Most of the fish I see at petco say either keep in groups of 3 or more or only keep it by itself. I want one that likes to live In a tank that only has different species not it's own species. So to sum It up I'm looking for an extremely peaceful fish that like to live with other species rather than school with it's own species that is small enough and is compatible with my aquarium. And this is my fist aquarium so a hardy species that's easy to take care of. And I want it to thrive not just survive that my rhyme lol! Preferably something really big. Thanks! I know about fishless cycling It's a pong story I'm stuck with cycling with these fish I wanted fishless cycling but it didn't work out I can't do fishless cycling so please don't say return them thanks!