Syngnathus leptorhynchus Girard, 1854 .

Bay Pipefish. To 38.5 cm (15.2 in) TL (Bayer 1980). Prince William Sound (Orsi et al. 1991) to eastern Gulf of Alaska (Mecklenburg et al. 2002) to Bahía Santa Maria, southern Baja California (Fritzsche 1980). Depth: surface (nightlight; Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California), intertidal to 18 m (60 ft) (min.: Chotkowski 1994; max.: Love et al. 1986). Garcia et al. (2019) proposed that this species is a junior synonym of Syngnathus californiensis Storer, 1845 .