Sea Horses- according to scientists all of them appear to practice some form of monogamy. After her eggs are fertilized, a female seahorse passes them to her male partner, who carries them in a pouch until they hatch. The males probably incubate one female’s eggs at a time, and it appears that some species remain bonded throughout the breeding season and perhaps even longer. (photo: Michael Bentley)
This male Barbour's seahorse has its tail curled in a tucked position for speed, as it moves horizontally. Since seahorses do not have caudal (tail) fins, they are slower than most other fish, and must rely on stealth for their survival. The dorsal fin (left side in photo) is used for propulsion, and the smaller pectoral fins below its gill openings are for steering and stability.