* Copepods: Small crustaceans that are a common food source for many marine animals.
* Amphipods: Another type of small crustacean.
* Larvae: The young forms of other marine invertebrates.
They use their long snouts to suck up these tiny creatures from the water. They are very picky eaters and often specialize in feeding on certain types of zooplankton, depending on their habitat and the availability of food.
It's worth noting that pygmy seahorses are extremely small (often less than an inch long) and live in close association with specific types of coral, making it difficult to study their diet in detail.