Fuqing has seahorses for sale in Fuqing Haima Aquaculture Farm, Fuzhou. Hippocampus is a precious Chinese herbal medicine with high medicinal value. Its side is flat, its abdomen is protruding, its trunk bone ring is heptagonal, its tailbone ring is quadrilateral, and its tail is often curled. The head is horsehead-shaped, at right angles to the trunk. Male fish's tail and abdomen mask bag. The body is taupe or dark brown. Hippocampus is a small fish in shallow water. It swims slowly and usually wraps its tail around seaweed or other objects. The optimum temperature range is 12 ~ 33℃, and the optimum water temperature is 28℃. Hippocampus has strong adaptability to salinity and can live in the salinity range of 10 ~ 30 ‰. The adaptability of new seedlings to salinity is poor, which is generally required to be above 15‰. It is required that the dissolved oxygen in each liter of water should be above 3 mg.