Secrets Behind Successful Fish Breeding Thinking about getting into fish breeding? Don't worry, it's not as daunting as it seems. Firstly, knowledge is power. Understand the specific needs of your fish - does it prefer soft or hard water? Does it thrive in fluctuating temperatures? Secondly, remember that a healthy fish is a breeding fish. Ensure they're well-fed and their diet is varied. This will give them the nutritional resources to develop eggs and sperm. Lastly, consider their environment.