I saw a strange looking baby fish in my pond a couple days ago, definitely not a goldfish, and then 3 of them swimming together yesterday. I'd gotten a couple young koi from a fellow ponder and when he netted them he came up with ONE mosquito fish so I got a freebie. When I saw the fry, I was thoroughly perplexed until I researched mosquito fish and read that they are live bearers - my freebie must be a momma!! Hoping I don't wind up with 100s of them too quickly.