There may be many reasons why blue triangle fish do not eat food, mainly the following points:

1. Breeding environment problems: blue triangle fish is more suitable for water temperature of 22~28℃, and the pH value is controlled. It will be better if it is between 5.0~7.0, and the hardness (dGH) is about 4~12°N;

2. Food sinks to the bottom: Blue triangle fish likes to move in the middle and upper parts of the water layer, and they cannot see the food that sinks to the bottom;

3. If the food is found to be inappropriate, the feed should be replaced in time.