Velvet is a condition caused by a microscopic parasite that lives on the skin and gills of fish. The parasite causes a thick, velvety coat to grow on the fish, which can make it difficult for the fish to breathe and swim. Velvet is highly contagious and can quickly spread to other fish in the aquarium.
Columnaris is a bacterial infection that can cause skin lesions and ulcers. The lesions start out as small, white spots that can grow to cover large areas of the body. Columnaris is also highly contagious and can spread quickly to other fish in the aquarium.
Both velvet and columnaris are serious conditions that can lead to death if not treated promptly. If you think your betta may have either of these conditions, it is important to take it to a veterinarian for diagnosis and treatment.
Here are some ways to prevent velvet and columnaris:
* Keep the water in your aquarium clean and free of debris.
* Avoid overcrowding the aquarium.
* Quarantine new fish before adding them to your main aquarium.
* Feed your fish a healthy diet.
* Treat any sick fish promptly.