Larval and juvenilecrustaceans are abundant in the area,which may be partly due to theecological role played by mangrove forest in the lower reach of the river.

• 花身鸡鱼之幼鱼所嗜食之甲壳类幼苗在河口域甚为丰富，可能与淡水河下游红树林所扮演之生态角色有密切的关连。