Ghost shrimp will eat any kind of fish 
          food that reaches the bottom, making them excellent scavengers. They 
          also will eat algae. They are peacefull, but some larger fish might 
          try to eat the shrimp, or harass them. As long as the water is clean 
          they will just about take care of themselves, and if you're lucky they 
          might produce some eggs for you. Shrimp that are carrying eggs are easy 
          to spot, the eggs are yellowish to green and carried beneath the females 
          swimmerets (legs) until they are developed enough to fend for themselves.