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Treating Common Fish Diseases: How to Treat Anchor Worms. – Water Garden Q & A

Picture of Koi with Anchor Word

Q: Treating Common Fish Diseases: Anchor Worm

A: What are Anchor Worms? Anchor worms are small crustaceans that start out their life as free swimming and find a fish to burrow their way into. The anchor worm will bury themselves into the fish’s muscles where they live for several months while developing. After developing, they make their way out of the fish, a process that often leaves bad wounds. Right before the anchor worm dies, it will release its eggs. The cycle is then repeated over and over again.

What are the Symptoms of Anchor Worms? First off, an obvious sign is a very visible parasite attached to the body of the fish. In early stages, it will look like a red sore or pimple. The fish will also “flash” or try and scratch the parasite off its body by running itself into rocks.

What Causes Anchor Worm and How can I Treat It? Anchor Worms are not caused by high levels of fish stress. Fish are usually infected by newly added fish already carrying the parasite or newly added aquatic plants that have anchor worm larvae on them. Since Anchor Worms’ larvae are free swimming in the water garden, the whole body of water must be treated to get rid of future cases. This can be accomplished with Dimilin. Dimilin is specifically designed to treat Anchor Worms. Although Anchor worms are a parasite in many cases a secondary bacterial infection will occur due to the open soars. To help fight against this secondary infection it is recommended that PimaFix be added along with the Dimilin.

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