Lysmata wurdemanni - The true peppermint shrimp from the Caribbean is a great detritivore for your clean up crew that will eat leftover food and detritus. The peppermint shrimp is an extremely popular reef tank pet because it naturally eats the ubiquitous nuisance pest Aiptasia anemones in the aquarium. We feed our peppermint shrimp a mix of pellet food and rocks covered in Aiptasia. They work incredibly well at cleaning up our Aiptasia and we're sure they'll help you out in your tank, too.
Aquacultured shrimp tend to be on the smaller side at sale size than wild caught shrimp, but the trade off is that they're hardier and better suited to aquarium life. Since these shrimp are short-lived, knowing you're getting a young shrimp that will work hard for its full lifespan is another benefit of aquacultured shrimp. They tend to grow very quickly when introduced to the home aquarium. After acclimation, it helps to introduce them to the tank when the lights are off, and do try to place them gently in the safety of the rock work rather than introducing them to the empty water column. These shrimp are most active at night, so it's normal that you won't see them during the day. If you have larger fish in your tank, we recommend keeping them in an acclimation box for a time.