Tomicodon petersii (Garman, 1875) .

Hourglass Clingfish. To 4.6 cm (1.8 in) TL (Robertson and Allen 2015). Punta Tosco (24°187’N, 111°42.8’W), southern Baja California (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California) into Gulf of California to northern Peru, Isla del Cocos, and Islas Galápagos (Robertson and Allen 2015). Benthic; depth: intertidal to 5 m (16 ft) (min.: Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California; max.: Robertson and Allen 2015).