Is it right to say that the fish that pays the bill can live, but the fish that buys a pair can't live?

This statement has no scientific basis. It depends on what fish it is. Large and fierce fish, such as arowana, are best kept separately. Small arowana, also territorial consciousness, will fight more. If it is peacock fish, Mary fish, parrot fish, etc. They are all raised in groups, and they are also good-looking. Both singles and doubles can be used. Goldfish, koi fish, crucian carp, these cold-water fish are also suitable for group culture, whether single culture or double culture.

The so-called single and double statement often has different meanings in geomantic omen. The meaning of singular is much better, so people who pay attention to feng shui will pay attention to the difference between single and double when buying fish.

For reference only, please accept it if you are satisfied.