When I lived in California, we had a 100gallon tank with a Shark-Fish, and a Algi Eater, we raised em from little pups too.
They were worth over $300 when we got rid of them, and dad paid something like $5 each when they were little. We gave them to a pet shop because we were moving.
I miss my Sharkfish! I named it Chance.... oh, and when I was younger, I put too much fish food in the water and Chance went blind in 1 eye and the other was almost completely blind, if I stuck my hand in the tank he would hit the side of it haha.