Why Does Your Corydoras Catfish Keep Swimming Against the Glass? (+7 Theories)
Corydoras catfish are popular aquarium fish known for their playful behavior. If yours seems to swim against the glass constantly, it may be trying to communicate something important about its environment. Several factors may cause a Corydoras catfish to swim against the glass, including stress, insufficient space, or a lack of stimulation in its environment. … Read more