Why did my goldfish try to escape?

1. Poor water quality: Goldfish are sensitive to water quality, and poor conditions can cause them to become stressed and try to escape. Make sure the water is clean and free of harmful chemicals, and that the pH and temperature are within the ideal range for goldfish.

2. Overcrowding: If your tank is overcrowded, your goldfish may feel stressed and try to escape in search of more space. Make sure the tank is of an appropriate size for the number of goldfish you have, and that there are plenty of hiding places for them to retreat to.

3. Incompatible tankmates: Some fish species are not compatible with goldfish, and having aggressive or incompatible tankmates can cause your goldfish to feel stressed and try to escape. Make sure you research the compatibility of different fish species before adding them to your tank.

4. Boredom: Goldfish can become bored if their tank is not stimulating enough. Make sure the tank has plenty of plants and decorations to keep them entertained, and consider providing them with toys or other enrichment activities.

5. Illness or injury: If your goldfish is sick or injured, it may try to escape as a way to find relief. Check your goldfish for any signs of illness or injury, and take appropriate action to treat any issues.

If your goldfish is trying to escape, it's important to address the underlying cause as soon as possible to prevent further stress and potential harm to your fish.