• Big-berry manzanita and the skyline of the high peaks greet visitors who explore the steep and narrow portion of the High Peaks trail. NPS Photo|Sierra Willoughby

    Pinnacles

    National Park California

There are park alerts in effect.
show Alerts »
  • Fee Free Days in Celebration of National Parks Week

    On Saturday April 19 and Sunday April 20, All National Parks including Pinnacles will waive entrance fees. In addition, Western National Park Association Sales in visitor centers of the park will be discounted by 15%

Fish

Due to the intermittent nature of Pinnacles’ streams, the three-spined stickleback is the only native fish here. A predatory feeder, it eats predominately aquatic insects, and reaches three inches in length when full-grown. The stickleback is often observed along the Bear Gulch and South Wilderness Trails. Other fish species may swim upstream into the Park from the Salinas River during floods, but they generally do not survive through the summer.

In the early 1980’s, non-native catfish inhabited the reservoir. This population was eradicated in the mid-1980’s by draining the reservoir and electroshocking the remaining fish. In the mid-1990’s non-native green sunfish infiltrated Park streams. They were considered a major threat to red-legged frogs, and were removed by electroshocking. Currently the mosquitofish is the only non-native fish species here. Although its presence has a minor impact on red-legged frogs, eradicating it is currently impractical.

For more information on the Exotic Green Sunfish Removal Project and past exotic fish infestations, see the

1999 Exotic Fish Removal Report.

Related Information:
Fish Checklist for Pinnacles National Monument

Did You Know?

Starry skies. Photo courtesy of NASA.

The night sky is vital to many plants and animals that call Pinnacles home and it holds many meanings for many cultures. An unpolluted night sky is especially valuable to humans wishing to experience natural darkness, shooting stars, or the Milky Way.