I have a 55 gallon freshwater tank that USED to have a good variety of fish but since my eclipse catfish have grown up some and gotten bigger they decided that 90% of the other fish were food, now all i have left is a mid/large angel, two eclipse catfish, and a decent sized pleco, i need some ideas for fish that i can put in here, cant be fin nippers because of the angel but cant be too small or the catfish will eat them, any suggestions are appreciated