The reason why seawater fish Tengu cannot open its mouth may be due to the following reasons:
1. Malnutrition: The appetite of Tengu may be affected by the environment, feed and other factors, leading to malnutrition, resulting in malnutrition. The situation of being unable to open the mouth.
2. Indigestion: Tengu fish may be unable to open their mouths due to improper swallowing, indigestion and other problems.
3. Viral infection: Tengu may be infected with viruses, causing problems such as inflammation and swelling of the mouth, which in turn affects its ability to eat and move its mouth.
If you find that the tengu fish hanger does not open its mouth, you can take the following measures:
1. Check Water quality: Ensure that the water quality is clean and suitable, and that water temperature, pH value, salinity and other indicators are within the normal range.
2. Adjust the diet: Provide appropriate food for the tengu, including fresh seaweed, shrimp, fish, shellfish, etc., and avoid overfeeding and overeating.
3. Give nutritional supplements: If malnutrition causes the inability to speak, you can add some nutritional supplements to the tengu, such as vitamins, amino acids, etc.
4. Give drug treatment: If the inability to open the mouth is caused by viral infection, the tengu can be treated with drugs, such as antibiotics, anti-inflammatory drugs, etc.
If none of the above measures can solve the problem, it is recommended to seek timely consultation and help from a veterinarian or professional breeder.