![180928131304-large](https://utterbuzz.com/wp-content/uploads/2019/05/180928131304-large-640x419.jpg)
A new study has found that steelhead trout have a remarkable life-cycle variation that responds to changes in temperature and numbers of other species of salmon.
A new study has found that steelhead trout have a remarkable life-cycle variation that responds to changes in temperature and numbers of other species of salmon.