Biology

Inhabits shallow coastal lagoons and lowland rivers in freshwater and brackish water with salinity below 12 ppt. Adults occur in muddy reaches of rivers; in brackish water, more than 3 m deep (Ref. 4696, 59043). This species spawns after first winter, May-June and females die shortly after spawning while with males, some weeks after. Feeds on mollusks, crustaceans, insect larvae and small fishes (Ref. 4696, 59043). Eggs are pear-shaped (Ref. 4696).