Red carp belongs to water, so it may be that the five elements need water. As for the red one, I don't know much about it. But the most important thing is that carp is said to be a spiritual animal and has the function of warding off disasters and driving away evil. It is said that carp can protect against disasters.
This is what I said, but it is not credible. You can ask the Feng Shui master directly. In addition, practicing good deeds is the most important. A house that accumulates good deeds will always be blessed. If you want to raise animals, you should raise them carefully.