Hello, I recently bought a betta male and 3 Santa Maria Endlers for a 10 gal tank. I did a proper water transfer and fish get along fine my betta doesn’t care about the Endlers at all. However, I noticed today my betta has a clamped fin and is darting back fourth at the bottom of the tank and then going up to the surface sometimes to get air. The temp is at 80* steadily, I have aqueon quiet flow filter for 10-20gal with a 50watt hearter, there are plenty of decorations as the bottom as well as plants where he can hide. The tank is 1 day old currently. I tested the waters the lvls seemed fine, any suggestions?