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 Eucinostomus gracilis (Gill, 1862) . Graceful Mojarra or Slender Mojarra. To 23.9 cm ( 9.4 in ) TL ( Amezcua Linares 1996 ). Bahía de Ballenas ( 26°39.7’N , 113°18.7’W ), southern Baja California (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California) to northern Peru ( Chirichigno and Vélez 1998 ), including southern Gulf of California (Bussing in Fischer et al. 1995 ) and Islas Galápagos ( Grove and Lavenberg 1997 ). Marine, brackish, and fresh waters ( Fricke et al. 2020 ); depth: in ocean, surface to 1–112 m ( 3–367 ft ) (min.: Gonzáles-Acosta et al. 1999; max.: Amezcua Linares 1996 ). Eucinostomus californiensis (Gill, 1862) and E. gracilis are synonymous. The name E. californiensis was selected as the correct name by Jordan and Evermann (1898) but this has been largely overlooked and E. gracilis is the name usually seen.