I introduced a derasa clam and a cleaner shrimp at the same time about 2 months ago. All my research led
me to believe they're compatible. They had been doing fine since. But yesterday I saw the shrimp pulling at the clam's mantle. He tore the edge of one of the clam's openings. I placed a protective cage around the clam, but today the clam looks bad: retracted mantle and open shell. Any advice?
10 G marine reef
1 chromis, 1 false percula clown, 7 hermits, 2 snails
pumping xenia, ricordia, button polyps, green BTA