Robuta

https://www.usgs.gov/labs/columbia-river-research-laboratory/science/northern-pikeminnow-ptychocheilus-oregonensis-crrl

Northern Pikeminnow (Ptychocheilus oregonensis) - CRRL | U.S. Geological Survey

Species Studied - Northern Pikeminnow (Ptychocheilus oregonensis)

northern pikeminnow ptychocheilus oregonensis geological survey crrl

https://www.fws.gov/species/northern-squawfish-ptychocheilus-oregonensis

Northern Squawfish (Ptychocheilus oregonensis) | U.S. Fish & Wildlife Service

northern squawfish ptychocheilus oregonensis wildlife service