Signs of anchovies giving birth:

1. Square shape: When anchovies give birth, their originally round belly will turn slightly into a smooth square shape.

2. The fetal spot deepens: When anchovies give birth, a transparent fetal spot in front of the anus will darken and turn black.

3. Protruding anus: The anus will obviously protrude when the anchovy is giving birth. It is very accurate to judge from this point.

4. Abnormal activities: When anchovies are about to give birth, their activities will be abnormal, either unusually quiet or unusually excited.

Notes on raising anchovies:

1. The pH value of the water has a great impact on anchovies. The most suitable pH value for anchovies is between 6.5-7.5. , when changing the water, remember not to replace it all, you should keep some old water.

2. If the water temperature is lower than 18°C, anchovies will easily suffer from loss of appetite, mental weakness, and are also susceptible to diseases such as saprolegnia. You can use a heater appropriately.

3. Anchovies are prone to die in spring and autumn. This is because the temperature changes greatly in spring and autumn, and fish are relatively susceptible to diseases, especially common diseases such as white spot disease and saprolegnia. So during these two seasons, pay more attention to anchovies.

4. The concentration of nitrite in the water will affect the survival of anchovies. Once the concentration of nitrite is too high, it will harm the anchovies. You can purchase reagents to test the concentration of nitrite for proper detection.