Leuresthes tenuis (Ayres, 1860). California Grunion. To 19 cm (7.5 in) TL (Eschmeyer and Herald 1983). Tomales Bay, northern California (Roberts et al. 2007) to Bahía Magdalena, southern Baja California (Miller and Lea 1972). Depth: intertidal to 18 m (60 ft) (Miller and Lea 1972).