I work at a pets store and had just received a few fish from a costumer who is moving. Among the many fish he brought in...I adopted an African Brown Knife and a ??Siselean Worm?? not sure on the spelling...I'm hoping that there is someone out there that can give me a little insight on my new aquatic friend. He is now 20 inches long and I really need to know what he eats...what kind of water conditions they prefer and/or anything anybody might know. Also, if anyone can tell me how to correctly spell what ever it is...that will help me to locate some info over the internet... I am housing him in a 125 gallon tank...is he going to out grow that?? Also, he is sharing the tank with several fish with the smallest being 2.5 inches...will they be ok...or might they become a snack?? Thank you to everyone for any info that you might be able to provide!!