About Freshwater Crayfish

Setting up a freshwater crayfish aquarium

 Getting Started
 Filters
 Tank Setup
 Tank Water
 Overcrowding
 Food
 Feeding Times
 Shelter
 Caring for the young
 Moulting
 Signs of Stress
 Thelohania

 

 

How to Keep Native Freshwater Crayfish

Thelohania - a threat to freshwater crayfish.

Freshwater crayfish, such as marron and yabbies, can become ill like any other animal. Thelohania is one of the diseases that affects freshwater crayfish. This disease is caused by a very tiny parasite, that you would need a microscope to see. The parasite affects the muscles of the crayfish and eventually kills the animal. The disease is spread by healthy crayfish eating infected crayfish. Most of the time it is hard to tell the difference between a healthy and an infected crayfish.

The disease doesn’t make people ill, even if they eat an infected crayfish.

People can help stop the disease from spreading.

  • Don’t use freshwater crayfish for fish bait.
  • Don’t move freshwater crayfish from one area to another.
  • Don’t put pet crayfish back into the wild.
  • Don’t stress your freshwater crayfish by having too many animals in the water tank or pond, or by having poor water quality.

If you think you have a sick crayfish contact the Fish Health Section of Department of Fisheries to find out what you should do.

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