Many people ask me if they should get goldfish for good luck and good Feng Shui.
While fish are known to be a FS cure and absorb negative energy, historically it was said that quantity of 9 is best, with one being black, the others, orange.
This does not mean you should run out and buy goldfish! The goldfish need to be in a particular area of the space (North or Southeast for 2019), the tank or bowl needs to be pristine, the fish need to be healthy and replaced when they expire.
I do not recommend this as a cure unless you love fish tanks and are willing to take good care of the fish, otherwise, it’s a negative, and is destructive rather than a cure. A better remedy is a circulating fountain or photo of water.