Author: Maeda, 2013
Comments: The species was observed in a small pool less than 1 m deep and a rapid just below the pool, located 1.5 km from the stream mouth, no major barrier to upstream migration between the stream mouth and this site. The individuals were often shoaled with the abundant <i>S. percnopterygionus</i> and observed scratching on the rock surface for feeding with them. Single individuals of <i>S. atropurpureus</i> and <i>S. multisquamus</i> were also observed at the same site. Other abundant fishes found on the site were amphidromous gobies, such as <i>Sicyopterus japonicus</i> (Tanaka 1909), <i>Awaous melanocephalus</i> (Bleeker 1849), <i>Rhinogobius nagoyae</i> Jordan and Seale 1906, and <i>Tridentiger kuroiwae</i> Jordan and Tanaka 1927, amphidromous pipefish, <i>Microphis leiaspis</i> (Bleeker 1854), and catadromous flagtail, <i>Kuhlia marginata</i> (Cuvier 1829) (Ref. 95104).