Everything I have read about them say that they are a brackish species too. The owner of my LFS told me though that they are one of a few species that begin their life in brackish/salt water and move to less salty water as they grow older. That is the only time I have ever heard this, and I know this is not typical of fish in general, but according to him that is how this species lives. He said it will be fine in completely fresh water. Has anyone else heard this or have I been misinformed?