The Hippocampus reidi can grow as big as twelve inches! They are carnivores and ambush predators, often hiding in surrounding coverings before pouncing and devouring prey.

In mating it is actually the male who becomes pregnant. Seahorses are basically monogamous; before he becomes pregnant the male and his mate carry out a mating ritual over three consecutive mornings. During the ritual both the male and female become much brighter colours and appear to dance with one another