• A spadefoot toad looking straight at the viewer, only his eyes are visible. Photo by Paul Johnson

    Pinnacles

    National Park California

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  • No Fires - Fire Danger Very High - No Fuego

    No Fires in the campground, no smoking on the trails. Observe these rules to protect park resources. No se permite fumar en los senderos, tampoco se permite las fogatas en el campamento. Proteja los recursos del parque y respete las advertencias.

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 Monument 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 Monument 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?

Yellow Starthistle

The yellow star thistle is one of many invasive (non-native) plants threatening the ecosystems of Pinnacles. Many seeds are accidentally transported into the park on shoes and gear; you can do your part to prevent the spread of these pests by cleaning shoes, socks, and gear before visiting the park.