Scatophagus argus is a crucial fish species in South and Southeast Asia, but its artificial breeding techniques need improvement, highlighting the need for research on its reproductive biology.
Previous findings suggest that leptin (Lep) affects fish reproduction, but its specific function in S. argus remains unexplored; the analysis revealed the presence of two lep genes: lepa and lepb, with distinct structure and expression patterns.
Further studies indicated that higher expression of lepa in the liver correlates with significant levels of estradiol (E) and vitellogenin (Vtg) in female fish, suggesting that lepa plays a regulatory role in female reproduction in S. argus.