Internal parasites are among the most common - and misunderstood - threats in aquariums. From subtle weight loss to sudden decline, worms can devastate fish if misdiagnosed. This guide cuts through myths with clear, evidence-based treatments trusted by professionals and hobbyists alike.

Few topics spark more debate among aquarists than how to administer deworming treatments. Some insist that adding medication to the water is the only reliable approach. Others argue that medicated food delivers a cleaner, more targeted cure. Both camps can point to real-world successes, yet the truth is more nuanced than either side likes to admit.

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.