The shrinking size of Alaska salmon, a decades-long trend linked in part to warming conditions in the ocean, is hampering the ability of Chinook in Alaska’s two biggest rivers to produce new ...

Each fish has a different size, which makes it easier to hunt down. There are small, medium, large, and giant fish, all which have different shadow sizes, as shown below.

Different species and sizes of fish have varying tolerances for hypoxia, so fish kills may only affect some sizes and species of fish, like shad, while other sizes and species survive.

Different species and sizes of fish have varying tolerances for hypoxia, so fish kills may only affect some sizes and species of fish, like shad, while other sizes and species survive.