Scarlet Cleaner Shrimp (small/medium)The Scarlet Cleaner Shrimp (Lysmata amboinensis) is successful in environments with dim light, plenty of rock cover, and a good sandy substrate. Similar to most other cleaning shrimp, the Scarlet Cleaning Shrimp are intolerant of copper or high nitrate levels, but need a correct level of iodine in the water to promote proper molting. As far as what they will eat, they will accept any freeze dried or frozen foods and also bottom feeder tablets.