The hornwort, an extremely popular aquarium plant that small freshwater fish like to take cover in, is now a rare plant due to an invasion by the non-native fu shou snail.
至於點綴水族箱最好的水草，小型淡水魚最喜歡躲藏的「金魚藻」，被外來生物福壽螺吃成稀有植物。