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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.
The Colorado pikeminnow, P. lucius, is the largest member of the genus, ranging from 4–9 lb (2–4 kg) in adult fish with occasional specimens up to 25 lb (11 kg). Historical and anecdotal reports of Colorado pikeminnows nearing 6 feet (1.8 m) in length and 80 lb (36 kg) in weight have been made.
The Northern pikeminnow, Columbia River dace or colloquially Squawfish (Ptychocheilus oregonensis) is a large member of the minnow family, Leuciscidae. [2] This predatory freshwater fish is native to northwestern North America, ranging from the Nass River basin to the Columbia River basin. [ 2 ]
Hardheads from the Feather River which had grown to 44–45 centimetres (17–18 in) were aged at 9–10 years old, and it is considered that older and larger fish may occur in the Sacramento River. Hardhead found in smaller streams rarely reach longer than 28 centimetres (11 in) while old records suggest that this species attained total ...
Another similar species is the Sacramento Pikeminnow, Pytchocheilus grandis, (sometimes referred to as Sacramento Squawfish). The Pikeminnow can be distinguished from the Blackfish by the head shape, which is more compressed in the Pikeminnow compared to the Blackfish, and has a longer snout than that of the Blackfish. The Pikeminnow has larger ...
Four species of anadromous salmonids, the coho salmon, chinook salmon, rainbow trout and coastal cutthroat trout are known from the estuary of the Salt River as are about two dozen estuarine fish including herring, sardine, smelt, stickleback, perch, sculpin, sole and flounder, and the freshwater invasive Sacramento pikeminnow. [6]: 37
These include five species of salmonids – chinook salmon (Oncorhynchus tshawytscha), pink salmon (O. gorbuscha), chum salmon (O. keta), coho salmon (O. kisutch), and steelhead (O. mykiss). These species are typically anadromous , migrating to the sea from their birthplace streams, and returning as adults to their rivers of origin to spawn.
The San Juan River Basin Recovery Implementation Program or (SJRIP) is a river management project that was established to recover two endangered fish species in the San Juan River, the Colorado pikeminnow (Ptychocheilus lucius) and the razorback sucker (Xyrauchen texanus), while allowing water development and management activities to continue in the San Juan River Basin.