Submarine fish can breed. Submarine fish can reproduce naturally when they are mature. It is best to keep the water temperature at 25-26 degrees when raising submarine fish. The water quality should be slightly acidic, with a hardness of 6 to 7 degrees, PH of 6, 7 to 6, and 8 degrees. Put chrysanthemum grass on the surface of the water, and a slightly acidic water quality can also make the fish grow better.

The male submarine fish in estrus is more colorful than the female submarine fish, The center of the outer edge of the caudal fin is pointed, and the abdomen of the female submarine is enlarged. A female submarine fish can lay more than 100 eggs, and then fish out the submarine fish. The fertilized eggs hatch after about 12 days. Submarine fish also need to have a good water quality during the breeding process.