Dear Lisa & Wayne:
When a seahorse that is eating well begins to produce white, stringy feces instead of its normal fecal pellets, that can be a sign of intestinal flagellates or internal parasites. But I don’t think that’s the case with George. When a seahorse has not eaten for a couple of days, it’s feces will usually be white as a result; under those circumstances, that’s simply indicates an undernourished seahorse that hasn’t been getting enough to eat lately, and is to be expected.
The solidity of George’s fecal pellets is abnormal, however. As I said, normally a seahorse is equal pellets are soft and pliable, and it’s unusual for them to be firm and solid like a grain of rice. That’s much more likely to be an indication of constipation then an indication of a potential parasite problem. I don’t think you need to be concerned about parasites at this point, Lisa.