Scalding tail disease. Small air bubbles will appear on the ray and skin of the Atlantic blue hanging fin. The buoyancy generated can cause the fish to lose its balance, causing the head of the fish to face down and the caudal fin to float on the water surface. fall off.

Treatment method: Change the water every 3~5 days, and the water temperature should not exceed 28 degrees. In severe cases, when changing the water, press the fins from top to bottom with your hands to drain the air bubbles between the fins.