Sebastiscus tertius

Sebastiscus tertius (Barsukov & Chen, 1978) Remarks: This species was similar to Sebastiscus vibrantus, and both species can be distinguished from the other two congeners by having 19 pectoral-fin rays (vs. 17 in S. albofasciatus and 18 in S. marmoratus). Sebastiscus tertius differs from S. vibrantus by having a scaled area on the suborbital bone extending over the anterior margins of the orbit (vs. scaled area does not extend over the anterior margins of the orbit), parietal spine equal to nuchal spine (vs. parietal spine longer than nuchal spine), and a shorter pectoral fin base (9.2– 11.7% vs. 11.1–13.2% standard length in S. vibrantus) (Morishita et al. 2018). According to our examined materials, the characters matched the description of S. tertius, including the state of the scaled area on the suborbital bone, equal lengths of parietal and nuchal spines, and the shorter pectoral fin base of 9.9–10.4% standard length.