Eel suggestion for a 58 g tank.

[steve617]

I have a 58 gallon tank that just has a few fish in it. A very old severum (about 12 years old) and a couple bolivian rams along with a very lazy syn. catfish. Are there any eels besides the spiny eels that would work in this size tank. The foot print of the tank is 36" long and 18" wide. thanks