What is fin rot in fish typically caused by?

Fin rot is primarily caused by a bacterial infection, which often arises from poor water quality conditions in the fish's environment. These bacteria, such as Aeromonas and Pseudomonas, can thrive in water that is high in organic waste, has inadequate filtration, or experiences insufficient water changes. When fish are exposed to these harmful conditions, their fins can become damaged and susceptible to infections, leading to the characteristic fraying or rotting appearance of the fins.

Maintaining good water quality by regularly testing and changing the tank water helps prevent fin rot. Ensuring optimal tank conditions minimizes stress on the fish, allowing them to maintain healthy immune systems, which further protects against bacterial infections. This understanding highlights the critical link between the health of aquatic animals and their environment, teaching the importance of routine care and management in aquaculture or home aquarium settings.