More than 90% of Crater Lake’s shoreline is now a crayfish stronghold and they’ve been found living at depths up to 820 feet. In the mid 1980s the average rainbow weighed an average of just ...

In the late 1800s, fish were introduced to Crater Lake to attract visitors. In 1915, park managers introduced signal crayfish as a food source for the fish, according to park history.

Fishing is allowed in Crater Lake and all streams except Lost Creek and Sun Creek, where native bull trout live. The species is considered threatened and protected under the Endangered Species Act.

CRATER LAKE, Ore.--One of the tourist signs at an overlook here is as striking as the scenery: ... As many as 40 other kinds of fish introduced to the lake over hundreds of years have died off.

The Crater Lake newt only exists in the rich, blue waters of the Oregon national park. Its population has been declining in recent years, mostly due to growing numbers of signal crayfish.

The California border was just behind us, and Times photographer Mark Boster and I were roaring up a rain-soaked Oregon highway past fog-shrouded forests and green-stubbled boulders.

In the 1800s, fish were introduced into Crater Lake to attract visitors. In 1915, park managers brought in the signal crayfish as food for the fish. Both fish and crayfish eat the newts, but according ...

Crater Lake never had fish in it before, and that's part of why its water is so clear and brilliantly blue. So how did the fish get there? Well, that gets back to the newspaper man.

Crater Lake is the deepest lake in the U.S. with a depth of 1,943 feet, according to the National Park Service. It’s the 10th deepest lake in the world. The lake formed after Mount Mazama ...