Checklist of marine and estuarine fishes from the Alaska-Yukon Border, Beaufort Sea, to Cabo San Lucas, Mexico Author Love, Milton S. 0000-0003-0981-0061 love@lifesci.ucsb.edu Author Bizzarro, Joseph J. 0000-0002-2412-9357 joe.bizzarro@noaa.gov Author Cornthwaite, Maria 0000-0002-1528-3272 maria.cornthwaite@dfo-mpo.gc.ca Author Frable, Benjamin W. 0000-0003-4525-0671 bfrable@ucsd.edu Author Maslenikov, Katherine P. 0000-0003-0981-0061 love@lifesci.ucsb.edu text Zootaxa 2021 2021-10-19 5053 1 1 285 journal article 2792 10.11646/zootaxa.5053.1.1 75ffcff3-6336-4f6a-8d0b-94c082519099 1175-5326 5578008 295D03A4-589A-4E3F-B030-5121EF7D7398 Entosphenus tridentatus (Richardson, 1837) . Pacific Lamprey . To 85 cm ( 33.5 in ) TL ( Orlov et al. 2008b ). Honshu ( Orlov et al. 2008b ), and Hokkaido , Japan (Nakabo in Nakabo 2002 ); eastern Chukchi Sea (Mecklenburg et al. 2002), and Bering Sea to Punta Canoas, northern Baja California ( Miller and Lea 1972 ), and likely to Isla Clarión, and Islas Revillagigedo, Mexico ( Renaud 2008 ). Southernmost freshwater occurrence is currently in the Big Sur River, central California ( Reid and Goodman 2016 ). Depth: at sea, near surface to 1,508 m ( 4,946 ft ) (min.: Eschmeyer and Herald 1983 ; max.: Hoff and Britt 2003 ). Anadromous, may be found at sea, often far offshore, any time of the year. Previously as Lampetra tridentata (Richardson, 1836) . The author of the species description is sometimes given as Gairdner, or Gairdner in Richardson, but authorship evidently is correct as Richardson, or Richardson (ex Gairdner) ( Eschmeyer 1998 and online edition 8 November 2004 ).