Shrimp are fearless! My whisker shrimp in the 29 gallon always steal food and run away. They will hang on the bottom and wait for an opening while my cories are feeding. Then they will run in and pick up the algae wafer/veggie stick and take off for the end zone! When I stick my hand in the other tank to drop food in the feeding dish, a bunch of rcs will swim over and hang on my hand or arm. Pretty cool. Love those guys.