I can see where you would say mandarin's considering the mandarin's take a good amount of the seahorse's food. But as long as the seahorse and mandarin get a healthy does of shrimp (seahorse= mysis, ghost, glass, whatever) & (mandarin= live brine)... then the pods will be a back up food. However, in my case... my mandarin and seahorse barely ever leave eachother's side. It's quite cute actually.