Idaho AFS Logo

Fishes of Idaho

How are your identification skills? Do you know which are native and which were introduced? To see photos and descriptions, and learn more about Idaho fish, check out our Fishes of Idaho online database.

There are around 20,000 species of fish in the world. About 58% of these are marine (saltwater) fish, 41% are freshwater fish, and 1% are both. We have around 100 species in Idaho, and the list keeps growing as more non-native fish are released into Idaho waters. There are only 39 species of fish native to Idaho. The rest were introduced--some by accident, but most on purpose.

(Salmonoids)

Bonneville whitefish (Prosopium spilonotus)

Native

The Bonneville whitefish is native only in Bear Lake in Idaho and Utah. Like the Bear lake whitefish, the Bonneville whitefish is relatively small. It rarely exceeds 12 inches in length. Bonneville whitefish spawn in early winter and are vulnerable to angling. Their flesh is reported to be very good to eat.

Click thumbnails to enlarge