I have at least two crabs in my 67g that I want to catch. However, they seem to be algae eaters, so I don't know how successful I will be with my trap.
Glass with plastic wrap covering top, with a small opening for crab (and hopefully not the cleaner shrimp

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Trap in place, baited with mysis, in the 67g. Hopefully the opening is small enough to keep the shrimp out

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