1. Rubbing the jar: Brontosaurus will feel uncomfortable after being infected with external parasites, especially itching and redness on their body surface after being infected with parasites. If they want to get rid of parasites or relieve itching, they will relieve it by rubbing the jar or sand.

2, fidgety: After being infected with external parasites, the character of Tronidae will become extremely irritable, because their physical discomfort cannot be alleviated, so they will swim back and forth in the fish tank. Moreover, Tronayana has the habit of "escaping from prison", and when they feel unwell, they may jump out of the fish tank.

3. Dull body color: After being infected with external parasites, the body color will become dull, and the food intake and activity will also decrease. When parasites stay on the body surface for too long, redness or ulceration will occur in the parasitic parts.

1. Cleaning up parasites: The breeder should first clean up the parasites on the surface of Trayonotorus. If it is a large parasite, it can be pulled out with tweezers. If it is a smaller parasite or parasite egg, the breeder needs to use drugs to treat it.

2. Dropping: After the breeder cleans up the parasites, he should use trichlorfon or other special insecticides to give the diseased fish a medicinal bath. The medicated bath is designed to kill the parasite's eggs and prevent them from hatching and reproducing again.

3. Anti-inflammation: The skin of Brontosaurus will be damaged after being infected with parasites. Breeders need to put them in a medicinal bath in yellow powder or potassium permanganate solution to avoid infection.