freshwater eels

its very cool though to see the eels poking their head out of the sand but yeah those eels are the only ones that might be able to live in a 50 gal
 
Fire and Tiretrack eels can reach 3 feet although I think 2 or so feet is more common in aquariums. The zig zag and peacock eels will reach between 7-10 inches. I have a zig zag eel in my 30 and he's doing great. Word of warning, they are jumpers and will find any opening you have. They are also not aggressive and can't really defend themselves but they will eat anything that moves and fits in their mouth.
 
are any of these actually eels?
 
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