Gemini is a cow in geomantic omen, so it is more economical to raise a few fish without water.

The type of fish farming is usually the homonym of "carp" and "profit" of koi fish and goldfish koi fish, and the "gold" of goldfish is a precious thing, so raising koi fish and goldfish is to profit from business. It's best to raise fish of 3, 6 and 9, where 3 and 6 mean "three are inexhaustible" and "six are infinite", and the largest single digit 9 also means "long and long". For example, a fish tank can raise 19 or 29 fish. Golden or black fish is the best color.

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