Hi, my husband and I have had our tank for 3 months and only have 3 crabs, 2 snails, 1 shrimp and 4 damsel fish. I am thinking about getting him a sea horse for Christmas. They are why he bought the tank (he loves them) and still hasn't gotten one. Does anyone know if a sea horse would be compatible with what I have now or if I can even get one? One of our LFS had some but he killed them (I think he is crazy...this summer he flooded his whole store!) He always has the best fish though.