Goldfish Station

This is a small anemone like freshwater creature. It attaches itself to any stationary objects it can and has small extending stinging tentacles. Hydras are not harmful to adult fish, but these annoying little creatures will have a very happy healthy life living off your fry. Symptoms include half-eaten or dissolved fry. Check for cannibalism first. Maybe you're not feeding your fish enough, or your fry need to be culled.

Since hydras live off live food, fry are a delicious treat for them. If you have hydras, take out the fry and do an emergency cleaning of the tank. Do as much as you can to ensure that none of the old water carrying any these organisms is placed back in the newly sterilized