Fish Napoleon / Napoleon Wrasse



This fish named napoleon or better known as the Napoleon Wrasse. Napoleon Wrasse in Latin, known as Cheilunus undulatus is one big reef fish that live in the tropics. Length of these fish can reach 1.5 meters. And some fish can reach sizes of up to 180 kg at the age of 50 years. Animal life is generally similar to other reef fish that live in solitary. The divers usually find themselves on the fish swim around the reef area and are usually very tame with the divers. Another uniqueness owned napoleon wrasse fish are the eyes that can see up to 180-degree viewing angle.

Australians call this fish as Hump Head Maori Wrasse, which is distinguished because the face has the strokes that resemble ornate face the Maori. The strokes creamy (creamy yellow) overlap on the nose and cheeks, then spread to the opposite end of the body and pectoral fins. Body plated with bright green color on the top and around the brown fins. Color on the tail bluish lead. Body scales are very large, on the edge streaked with blackish cream-colored vertical lines. Two black streaks around his eyes toward the back and two more at a slight angle facing towards the top of the lip. The older the fish, the meat lumps above his eyes getting bigger.

Napoleon wrasse have hermaphrodite reproductive patterns. The fish are usually born as males and females will change into adulthood while. So often found in the male dominance of the fish populations of small to medium size and dominance of the population will turn into when approaching a mature female gonads. This is a unique phenomenon in nature that is one of the most strategic sea animals utntuk maintain their population lives.


These fish typically move into shallow water coral reefs in search of food. Way of eating is to dismantle the amount of dead coral with teeth to look for snails and worms-worms are buried. They loved to eat the shells that are large such as Triton. The fish is able to solve the shells of shellfish for meat easily. Sound scours his mouth when eating, very interesting for divers to be likened to a group of children who were eating confectionery. Sometimes these big fish are also sharpening his teeth on rock massif (solid), leaving a scar which is amazing.

Napoleon female fish lay eggs all year round on the edge or the outer reef slopes. The egg-laying process occurs in groups or in pairs. Spawning activity in the group were dramatic. The activity begins with joint around slowly to form a group. When members of a group grows, they swim faster and faster, eventually forming increasingly large group meetings. At the peak of frenzy earlier, the entire group up to the sea surface at lightning speed then turned around and left a mass of eggs and sperm in the back that soon carried away by the current.


If the spawn is done in pairs, with the males setting up nesting site on a piece of rock or a stone striking. From here he attracted the attention of a passing female, which could roughly give hope. How, in the potential mate she moves up and down and his body shook as he swam back. When ready to accept the courtship, the female will respond by giving a signal to the male fish that ask for her hand. Female is proudly arched form the letter "S" while showing his belly containing eggs. They then lay their eggs in a movement up and down rapidly to the surface. The egg-laying process was brief in one day, depending on local conditions. In areas with strong tidal currents, spawning occurs just after the peak of high tide, the ideal situation to move the eggs to the outer reef.

Until now much less research that reveals patterns of adaptation that can be developed by which the fish is clear that to date the animal population is very small and is one of the very protected fish. Fish populations are usually found in areas far from the bombing activities because of some experience of the divers, said the napoleon fish will rarely be found in places where the coral was damaged by bombing and or areas that use a lot of potassium cyanide. This illustrates that the existence of this fish is highly dependent on the ecosystem is maintained.
 
 

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