blind black worm freshwater fish

Question
i want to know the name of this fish! it it very rare and it gets big. i is now living
n my tank n water and feed off bottom waste from other fish. i saw this fish at
shedd aquium and it was over 5foot long and being with the letter s!

Answer
Hi Scott, This is far from my area of expertise but is it possible that you have a Caecilian worm? The name is pronounced with an "S" sound. They are actually an amphibian but can live in water. There are several species and some do reach 5 feet. I read that they do have a Caecilian worm at Shedd. Here's a couple links about them.

http://aqualandpetsplus.com/Amphibian,%20Caecilian%20Worms.htm

http://www.sandiegozoo.org/animalbytes/t-caecilian.html