Microdesmus dorsipunctatus Dawson, 1968 .

Black-spotted Worm Goby or Spotback Wormfish. To 12.5 cm (4.9 in) TL (Robertson and Allen 2002). Bahía Almejas, southern Baja California (24°22’N, 111°42’W) (Personal communication:Scripps Institution of Oceanography Fish Collection, La Jolla, California) and Gulf of California (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California) to Panama (Dawson 1968). Benthic; marine, brackish, and fresh waters (Fricke et al. 2020); depth: intertidal to 10 m (33 ft) (min.: Dawson 1968; max.: Robertson and Allen 2002).