Hi Everybody,

I need ideas on methods which could be used to mark small shrimp (approximately 3 cm total length) for the purposes of identification of individuals in a lab-based study. It doesn't need to be easily discernible on a camera, but it does need to be easily discernible if the shrimp were to be captured out of its tank with a net and examined. I was going to use nail polish, but now I've read that it takes a very long time to dry. The less invasive the method of marking, the better, and the simpler and cheaper the method of marking, the better. Thanks in advance.

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