silhouette of a seahorse with white background

>This article is about the fish; for other meanings of seahorse, see Seahorse (disambiguation). See text. Hippocampus is a genus of fish known as Seahorses (family Syngnathidae). They are found in temperate and tropical waters all over the world. Seahorses (which are not true horses) range in size from 16 mm (the recently discovered Hippocampus denise [1]) to 35 cm. They are notable for being one of only a few species where the males get pregnant. A seahorse pregnancy lasts approximately two to three weeks. Seahorses are also unusual among fishes for being monogamous. See more at Wikipedia.org...