At Pufferfish Enthusiasts Worldwide, every guide is a living document shaped by science and experience. Our understanding of aquarium life never stops evolving, and neither do our articles. Each update, discussion, and observation from our global community helps refine these resources and keep them accurate, practical, and alive.

This is the guide that turns uncertainty into understanding. Combining real research with practical fishkeeping experience, it explains what Camallanus worms are, how they behave, and how to stop them. While created for pufferfish keepers, this treatment protocol applies to many other freshwater fish species.

Fear travels silently through water. It is not seen or heard but carried as chemistry, passed from one fish to another in invisible trails of scent. These signals, called kairomones, have guided predator and prey for millions of years. In captivity, they raise a quiet question about welfare that every aquarist should understand.