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Lernaea (anchor worms) are parasites that infect fish and one of the main problems with them is that they increase the risk of attracting other diseases. The anchor worms can cause serious damage to a fish and can eventual kill the fish themselves, but anchor worms are only seldom the cause of death in fish with anchor worm since the damage weakens the fish and opens it up for other diseases that end up killing the fish. This book in hand provides guideline to research scientist of zoology and fish culturist.