Zoology with: Leafy seadragon (Phycodurus eques)

Posted: January 22, 2013 in Fish, Zoology
Tags: , ,

leafy_seadragon

The leafy seadragon or Glauert’s seadragon Phycodurus eques, is a marine fish in the family Syngnathidae, which also includes theseahorses. It is the only member of the genus Phycodurus. It is found along the southern and western coasts of Australia. The name is derived from the appearance, with long leaf-like protrusions coming from all over the body. These protrusions are not used for propulsion; they serve only ascamouflage. The leafy seadragon propels itself by means of a pectoral fin on the ridge of its neck and a dorsal fin on its back closer to the tail end. These small fins are almost completely transparent and difficult to see as they undulate minutely to move the creature sedately through the water, completing the illusion of floating seaweed.

Named after the dragons of Chinese mythology, Leafy seadragons (Phycodurus eques) resemble a piece of drifting seaweed as they float in the seaweed-filled water. The Leafy seadragon, with green, orange and gold hues along its body, is covered with leaf-like appendages, making it remarkably camouflaged. Only the fluttering of tiny fins or the moving of an independently swiveling eye, reveals its presence.

Like the seahorse, the male seadragon carries as many as 150-200 eggs. After being deposited by the female, the eggs are carried in the honeycomb-shaped area (known as the brood patch) under the male’s tail for approximately eight weeks. Seadragons have no teeth or stomach and feed exclusively on mysidopsis shrimp. Known as” i”Australian seahorsesn Australia, they are found in calm, cold water that is approximately 50-54° F (10-12° C). Leafy seadragons have been protected by the South Australian government since 1982.

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