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Can someone sex my mexican dwarf crayfish?

Discussion in 'Shrimps & Other Invertebrates' started by Kascopic, Sep 6, 2019.

  1. Kascopic

    Kascopic New Member

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    I just bought a Mexican dwarf crayfish for my livebearer tank (platies, mollies, and swordtails) and was wondering if someone could tell me if he/she is male or female? I think she’s female but idk
     

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  2. Back in the fold

    Back in the fold Fish Herder

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    I have never heard of one of these. We have them in lakes in Montana and they catch and eat minnows. Could that one do that ?
     
  3. Kascopic

    Kascopic New Member

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    I have no idea, he/she is about 1-1.5 inches and will probably max out at 2-3 inches so I think it would be possible to catch a minnow. I know there are many other species of crayfish that definitely could catch and eat minnows
     
  4. Colin_T

    Colin_T Member

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    I can't tell what sex it is from the pictures. If it's like most other freshwater crayfish, the female will have a small lump on the second set of legs (from the front of the head). The males have a small lump on the bottom set of legs. The lump is where the legs attach to the body.

    The following link shows where to look on Yabbies, which are an Australian freshwater crayfish, but they all get sexed the same way. In the video the guy counts up from the tail and the females have the lumps on the 3rd set from the tail, and the male has the lumps on the legs closest to the tail.


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    Crayfish are best kept in tanks without fish. All freshwater crayfish are nocturnal predators and will try to catch and eat fish in the tank. Feeding the crayfish at night just after lights out will help reduce the chance of them killing fish during the night. However, there is no guarantee the crayfish won't go after fish after it has eaten the food.
     

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