I have a 75 gal African Cichlid tank, I have a fluval 305 and a Eheim 2217 canister filters running. I have 7 cichlids now (am buying 3-4 a week for the next few weeks till have 20ish fish) but also in the tank is a freshwater eel that is green with black spots/stripes on it (don't remember the name have had it for about 8 months). Also have a leopard catfish and a common pleco. I really want to get a fire eel as well because of how cool they look. My question is, is the tank big enough for 2 eels? Or maybe better question is would they fight with each other?