Betta fish will eat nematodes. Nematodes are small worm-like creatures similar to roundworms. They usually appear in fish tanks, especially in environments with overly rich water quality. Although a small number of nematodes have little impact on ornamental fish, when they break out in large numbers, they can cause harm to ornamental fish, potentially leading to problems such as difficulty breathing and rubbing against the tank. Small fish like betta fish and guppies feed on nematodes. You can put them in the fish tank to help clean up the nematodes. In addition, improving water quality and maintaining the cleanliness of the fish tank can also effectively reduce the appearance of nematodes.
