每年４～６月为三角帆蚌的最佳繁殖季节，雌蚌将成熟的卵球输送到外鳃瓣的鳃丝间隙中，再将雄蚌释放在水体中的精子随呼吸水流纳入外套腔被外鳃瓣滤取，并与待留在鳃丝间隙中的卵球受精。受精卵即滞留在鳃丝间隙中进行胚胎发育。当胚胎发育至钩介幼虫时，雌蚌将成熟的钩介幼虫 April to June each year for the best breeding season Hyriopsis cumingii, the female oyster mature gossamer transported to the gills of the outer gill wire space, and then release the male mussels sperm in the water with the respiratory flow into the outer jacket is outside Gill flap filtration, and with the gill to be left in the gap between the gill fertilized eggs. Fertilized eggs that stay in the gap in the gill for embryonic development. When the embryo develops into a hook-borne larvae, the female mussels will become mature hook-borne larvae