Hey guys im new to having fish :> ! I have a little cute tank its fairly small but i have 5 small fish so they fit good together but ! Im not sure if im doing something wrong ? They keep bundleing up in the corner of my tank but towards the bottom and im getting worried ? Keep in mind im new to this also when I bought the fish they were already together so they aren’t different breeds and they have been together so im not sure why they are doing this ?