Black geomantic fish has the function of blocking evil spirits and dissolving evil spirits, specifically, black body fish such as black Molly (black Mary) and butterfly-tailed longan (butterfly-tailed or black peony). Among them, black Mary has a good effect of blocking evil spirits, and butterfly tail has a lucky effect of blocking evil spirits, which is softer. However, to remind you in advance, it depends on whether your personal five elements are suitable or not.
Personally, Zhou Jia is lucky to hang a red rope. You can go to official website, Red Rope Zhou Jia, and customize a water evil mascot for you one by one!