“…Black sea bream Acanthopagrus schlegelii (Bleeker, 1854), a coastal sparid found in Asia, is a commercially valuable resource for recreation and fisheries. As the species is targeted for fisheries stock enhancement in Japan, China, Taiwan and Korea, many studies have been conducted on the genetic population structure (Jeong et al ., 2003: Shi et al ., 2015; Yamashita et al ., 2021; Zhao et al ., 2021) and the effects of stock enhancement on this natural resource (An et al ., 2010; Blanco Gonzalez et al ., 2009; Blanco Gonzalez, Nagasawa, & Umino, 2008a; Blanco Gonzalez & Umino, 2009; Blanco Gonzalez, Umino, & Nagasawa, 2008b; Shan et al ., 2020, 2021; Umino et al ., 2010). Concomitantly with the study of stock enhancement, fundamental aspects of the reproductive ecology of this species were described under experimental tank conditions, including a polyandric mating system (Jeong et al ., 2007; Koga et al ., 1971; Wang et al ., 2020) and the nocturnal peak of spawning (around 21.00 hours) (Blanco Gonzalez et al ., 2010; Koga et al ., 1971).…”