I am looking to better suit my schools and possibly add some individuals to the tank and would like some suggestions. I know my schools need more to each. I currently am housing 4 blue tetra glofish that started spawning this morning after yesterday's water change. There are also 3 xray tetras, 3 long finned tetras, 3 Columbian blue/red tetras, 1 rainbow shark, 4 kuhli loaches, 1 peacock eel, and 1 oto. The dimensions of the tank are 48.25" W by 12.75" D by 24.75" H. It is filtered by a Penguin bio wheel 350 with an airstone on the other side of the tank inside a cave decoration.