What does raising lucky fish symbolize? If a person keeps a lucky one, must he accompany other fish?

Lucky fish naturally symbolizes luck, but the geomantic theory of this geomantic fish is almost equivalent to superstition. If you don't work hard, you won't be attracted to the lucky money. On the question of lucky mixed culture, we have two kinds of fish called lucky. One is red-tailed catfish, also called red-tailed cat and lucky cat, which looks like catfish. This kind of fish is a famous fit king and has a bad temper. It is best not to mix with other fish to avoid being fit. The other is a fish similar to an ancient warship. This kind of fish swims slowly, so it's best not to mix with other fish.