So I caught pikeminnow from a river near me. I caught around 50 super tiny fry. I raised em till they were about 1 inch when I had an ich epidemic. Lost most of the fish. The remaining fish went into a 10 gallon with my goldfish. They were happy and all doing fine till I decided to move them into my 50 gal. All the pikeminnow were about 4 inches so I put my 6 inch chanel cats in the 50. They grew quick and ate all of my pikeminnow in under a week while I was on vacation. I then immediately moved them out and I was left with one pikeminnow. He was my pride of a fish. I loved him like a human, untill today. He jumped out of his tank. I came home to check on my other fish and saw him lying on the floor. I'm sorry if this was a waste of time for you all but I am just super down after he died... Thank you to everyone who took the time to read this.