1. Reason: The culturist moves too much when fishing for fish fry, changing water or changing tanks, which frightens the colorful angelfish fry. Their body color will turn black, and sometimes they will refuse to eat.
2. Treatment method: After the fry is frightened, it will refuse to eat and gather together. At this time, they only need to rest for a few days and wait for them to recover.
1. Reason: When changing the water or changing the cylinder, the difference of water quality is too large. Fish fry can not adapt to the stimulation, the body color will turn black.
2. Treatment method: First, adjust the water quality and control the PH value between 6.2 and 6.8. Then slowly adjust the hardness of the water. When the fry adapt to the water quality, they will recover.
1. Reason: If the water is not changed or the fish tank is not cleaned in time, the sediment or bacteria in the tank will cause water pollution. The health of the fry will be threatened and the body color will turn black.
2. Treatment method: Clean the fish tank and replace the water body with water temperature of about 24-28 degrees and PH value of 6.2-6.8. Then sterilize, put in fry, carefully feed.
1. Reason: If the food you feed carries bacteria or parasites, after eating the seven-color angelfish fry, the bacteria or parasites will enter the intestinal tract, causing gastrointestinal diseases. If the disease is serious, the body color of the fish will be black.
2. Treatment method: First fish out the sick fish, and heat up the original tank for sterilization. The diseased fish should be soaked in a solution of four milligrams of furazolidone in one liter of water for 20 minutes once a day. At the same time, the sick fish should be fed with bait mixed with furazolidone, 0.1-0.2 grams per kilogram of fish, until the sick fish recover.
