Sacramento pikeminnow

The Sacramento pikeminnow (Ptychocheilus grandis'), formerly known as the Sacramento squawfish, is a large cyprinid fish of California, United States. It is native to the Los Angeles River, Sacramento-San Joaquin, Pajaro-Salinas, Russian River, Clear Lake and upper Pit River river basins. It is predatory and reaches up to 1.4 m (4.6 ft) in total length.[2]

Sacramento pikeminnow
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Cyprinidae
Subfamily:	Leuciscinae
Clade:	Laviniinae
Genus:	Ptychocheilus
Species:	P. grandis
Binomial name
Ptychocheilus grandis (Ayres, 1854)
Synonyms
Gila grandis Ayres, 1854 Leuciscus gracilis Ayres, 1854 Ptychocheilus major Agassiz, 1855 Ptychocheilus harfordi Jordan & Gilbert, 1881

The species has been introduced into the Salt River, where it is considered an invasive species.[3]

The species was introduced to the Eel River watershed in the 1970s by anglers using the pikeminnow as bait. It has a large appetite for salmonid species once it reaches about 6 inches (15 cm) long. Until then, it eats anything in its path. Because it is invasive in the Eel River, it has very few predators. River otter populations have increased and helped stabilize the pikeminnow population, but they still put pressure on endangered salmonid species.[4]