"FW" moray eel.

so the other day i was chatting with a employee i know as he was unloading a shipment, and he pulled out a Freshwater Moray eel. THe frikin thing was 24'' long for 30$! i was going to but it but i didnt get picked up from the store for another 2 hours, and this guy bough it. I was going to stick it in a 55 with a BP, a brown knife (the one that gets 9". it doesnt have a dorsal) a 10 inch ornate bichir, a 4 inch long red tail about 1 1/2 inches in diameter, and i was considering leaving my 5 inch bichir and 15'' ropefish but figured they coud turn into spaghetti noodles...... thoughts? the store is getting another in 2 weeks