When mine were that size, I was feeding primarily pieces of earthworms every other day or every three days (I think two earthworms cut in half for two eels) and an occasional cube of tubifex worms - I'd stick the cube to the glass underwater and they'd find it. I also had frozen glassworms (fry of some sort of fish I think?) and bloodworms, although it wasn't more than a nibble for the eels. I would buy rosy reds and freeze them, and offer those occasionally, too. They also ate any fish that died in the tank. I kept small schools of various tetras in with the eels, and lots of plants. Mine grew to 14-18 inches before I gave them away, and were eating primarily pinkies by that size.

Where any parasites were found in the necropsy?

Katrina