Lucky fish usually refers to a specific kind of fish that traditional culture thinks can bring wealth and good luck. Among them, koi fish is the most common lucky fish. People think that koi fish can absorb negative energy and transmit positive energy, so it is considered to bring good luck and wealth.

It is not accurate to say that fish raise several fortunes, including scavengers. Scavengers (also known as scavenger fish) refer to fish species that can eat bottom residues and impurities. Although scavenger fish has the function of cleaning debris at the bottom, it is not widely regarded as a lucky fish.

How to raise several richest people in koi fish is a relative problem. Generally speaking, one koi fish is enough. Because carp can reproduce themselves and they are very prolific, a koi fish can produce many offspring. So a koi fish can bring some wealth and good luck without too much breeding.

As for whether miscellaneous fish are regarded as lucky fish, according to general cognition, miscellaneous fish do not belong to the category of lucky fish. Miscellaneous fish refers to fish that have adverse effects on aquatic ecosystem or have no use value, and do not have the traditional function of making money.