eels

I need advice on my tire track eel. I have had "him" for almost 3 years, about 10 inches long. He got into the filter on my tank,( which has happened before) but this time he hasn't eaten in six days. I feed him every other to every two. I need advice please!!

 100L :  6 glowlight tetras, 6 guppies, 4 red eye tetras, 2 golden balloon rams, 2 penguin tetras and 3 Melanistius Corydoras I have a 100L tank and the Info is above i would like to know if there is a type of fish that will be quite large and elegant looking or crab, shrimp, crayfish or lobster...

I have a 75g aquarium with about 18 african cichlids a crayfish and some snails. Some of the african cichlids are demasoni, acei, labs, etc. the temp is about 82 degrees with a ph of 8-8.2. I did put some salt in as a buffer so it is slightly brackish. I was wondering what other fish could go in...