one of the only species where the male is the one to become pregnant. The incredible fish are classified in the phylum Chordata, subphylum Vertebrata, class Osteichthyes, order Gasterosteiformes, family Syngnathidae, and the genus Hippocampus (Michael, 1999). Seahorses belong to the Syngnathidae, a teleost family whose oldest fossils date back to the Eocene (Ahnesjö & Craig, 2011). The family also includes the pygmy pipehorses (grouped with seahorses in the subfamily Hippocampinae), pipehorses and
some stage of their development (Kennedy). The class of this animal is Actinopterygii. After that is their order which is Syngnathiformes. Also sea dragons belong to the family syngnathidae which derived from Greek meaning "fused jaw", a trait that all members of this family have in common(Sara A). As a member of the syngnathidae family, which are mostly marine fish and comprise of about 200 species of pipefishes in 54 genera, including the weedy sea dragon (Phyllopteryx taeniolatus) and the leafy sea
and prehensile tails. It is estimated to be about 35 to 40 seahorse species. Seahorses can be found at local aquariums, pet store, or even a gift shop where they are dead and dried to be sold as souvenirs. The common seahorse is a member of the Syngnathidae family, which also includes pipefish and sea dragons (Tacio, 2010). Helen Scales states that seahorses have “a suite of unusual biological features that include male pregnancy and apparently widespread monogamy (Scales, 2010)."