Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Blue crayfish (

flipnshi 04-23-2012 03:22 PM

Blue crayfish
I have a blue crayfish that I got and added to my 55 gallon alone with other fish. She hasnt bothered the other fish and has picked out her home as the decorative log. I have just noticed that she now has eggs under her backside. She has been hiding out and now I know why. She was in a tank with another blue at the pet store but decided to kill it from what the previous owner has told me. Did she mate then kill her spouse, I have read extensively on these unique crays and learned that they can store sperm for at least 18 months or even longer. Should I separate her from the other fish or leave her as she sought that the water conditions were right for her to lay in the first place?

Olympia 04-24-2012 05:00 PM

I wouldn't move her from the conditions she's used to. Changing their location can cause them to stress and drop eggs prematurely (at least true for other inverts).
Do you have cover like java moss in the tank for the babies to hide in? (I'm assuming you want to raise them).
The eggs should hatch in around a month. And after that it's important to keep up with water changes. They are born as miniatures of their parents. If you want to keep some, get a breeder box with fine meshing that they can't get through.. Keep the breeder box near the filter where there is good current for them. The babies should molt very often. You can feed baby brine shrimp, microworms, or liquefied foods.
I'm not sure at what age, but they will eventually become territorial (probably 4-6 weeks when they hit sexual maturity) so you'll have to have them all separate to prevent them being nommed. So be ready to sell em.

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