鮀 survives mainly in classical texts and place names — e.g. 鮀岛 is a literary alias for Shantou (汕头) in Guangdong, reflecting the fish-rich coastal estuary.
usage
Rare outside literary or onomastic contexts; for "catfish" use 鲶鱼 (niányú), for "Chinese alligator" use 扬子鳄 (yángzǐ'è).
