May not seem like a big deal yet the only fish we had in our pond were Gambusia's (mosquito fish). I think I put in a wrongly calculated, much too powerful, application of algeside. That or the last sudden freeze got them. Will be replacing them as soon as possible. Since they are in such demand here in North Texas I may have to use bull head or rosy red minnows. They are all fourth, fifth or sixth cousins.