| O0O it looks like the species i kept in my brackish tank at one time. echidna rodochilus
A very adaptable creature, it does well in brackish but thrives in a full marine enviroment. I fed mine one good sized meal weekly and it sustained him very while i had him, he's now rehomed. I believe i fed him frozen foods high in HUFAs (highly unsaturated fatty acids) to sustain his large body size which included frozen krill, squid, and HUFA-infused brine. But like renee said silversides work well for these guys too.
I love these eels, they have the most personality out of any fish i have ever owned, just be sure to keep a tight lid on him mine was an escape artist. I eventually had to duck tape every possible opening shut and place a heavy weight on the aquarium lid.
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Some people believe that their works are nothing more than a drop in the ocean, but the ocean would have been less without that drop.
-Mother Teresa | 
