Just found 2 crabs in my tank

[Nano]

lol good rule, my emerald crab is going to be getting banished to the sump once I upgrade my tank, he likes to taste my Zoanthids.

[Nano]

shrimp will work for sure. I put shrimp in a net and left it for 20 minutes and pulled out a 3 inch bristle worm!! I put him back but its was neat