Featured Story – How Do We Monitor Apache Trout Recovery Streams?

The Apache Trout (Oncorhynchus apache) is native to streams in the Black, White, and Little Colorado rivers in Arizona and is currently listed as threatened under the Endangered Species Act.  Populations have fluctuated over time, with declines caused by many… Continue Reading →

Native Fish Sampling in the Upper Blue River

Waders in the Water – Native Fish Sampling in the Upper Blue River During September 2017, the upper Blue River was monitored for Roundtail Chub. Chub from the Eagle Creek lineage were originally stocked into the upper Blue River in 2016, and… Continue Reading →

Native Species of the Month: Gila Trout

Common Name: Gila Trout Scientific Name: Oncorhynchus gilae Appearance:  Gila Trout have iridescent gold sides that blend to a dark copper on the gill plates.  They have small, profuse spots on their body typically occurring above the lateral line from… Continue Reading →

Gila Topminnow in Action Against Mosquitos

Featured Story – Gila Topminnow in Action Against Mosquitos Believed to have been the most abundant native fish in Arizona waters, the range and number of Gila Topminnow (Poeciliopsis occidentalis) within the state has declined dramatically due to habitat degradation… Continue Reading →

Native Species of the Month: Colorado River Pikeminnow

Common Name: Colorado River Pikeminnow Scientific Name: Ptchocheilus lucius Appearance: The Colorado River Pikeminnow, once known as the Colorado River Squawfish, is North America’s largest minnow (family Cyprinidae). Historically, individuals grew up to 6 feet long and weighed more than… Continue Reading →

Native Species of the Month: Bluehead Sucker

Common Name: Bluehead Sucker Scientific Name: Catostomus discobolus discobolus Appearance: Depending on local water conditions, color of skin can vary from entirely silver, to tan or dark brown dorsally, with a white to yellowish white belly; larger fish tend to have… Continue Reading →

Bluehead Sucker and Little Colorado Spinedace Stocking

A Day in the Field – Native Fish Translocations to Kehl Canyon East Clear Creek below C.C. Cragin Reservoir contains a robust population of Bluehead Sucker (Catostomus discobolus), but a recent invasion by nonnative Green Sunfish (Lepomis cyanellus) exposes the… Continue Reading →

A Day in the Field – Roundtail Chub Survey at Gap Creek

Department staff conducted Roundtail Chub surveys in Gap Creek this spring. Gap Creek has been a chub establishment site since 2012. Biologists survey the creek 1-2 times each year to monitor the fish population and document movement and reproduction. During… Continue Reading →

A Day in the Field – Razorback Sucker Larval Collection

Every year, tens of thousands of Razorback Sucker larval fish are collected from Lake Mohave by Bureau of Reclamation, National Park Service, Fish and Wildlife Service, Marsh and Associates, Nevada Department of Wildlife, and Arizona Game and Fish Department. Although these fish still… Continue Reading →

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