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#1
18th September 2010
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Schools of Fish
 Blue-striped grunt fish (Haemulon sciurus) and French grunt fish (Haemulon flavolineatum) school together near Bonaire Island in the Caribbean Sea. The sounds grunts make when grinding their teeth, using their swim bladders to amplify the sound, earned them their common name.  Rhapsody in blur, a school of yellowtail fusiliers (Caesio cuning) swims near the Bikini Atoll in the Marshall Islands. Their schooling behavior is a social adaptation that provides safety in numbers for the fish as they feed on plankton near coral reefs.  ]A school of orange basslets (Pseudanthias squamipinnis) feeds along with pink soft-coral polyps in Fiji�s Vatu-i-Ra Channel. Strong currents bring plankton-rich waters to Fiji, nourishing the almost 4,000 square miles (10,400 square kilometers) of its reefs.  Torpedo-sleek barracuda swim in a circular formation near the Solomon Islands. Barracuda (Sphyraena sp.) feed on small fish and may protect themselves against larger predators, such as sharks, by aggregating in schools. The barracuda�s lower jaw juts forward and contains the sharp teeth for which the family is known.  A school of multiband butterfly fish (Chaetodon multicinctus) swims off the Hawaiian islands in the French Frigate Shoals. Feeding mainly on coral, this species can be found at depths of 16 feet to nearly 100 feet (5 to 30 meters) and don't migrate, remaining instead near coral reefs.  A school of salema attempts to outmaneuver a hungry sea lion near the Gal�pagos Islands by circling to confuse the predator. Gal�pagos sea lions dive down some 120 feet (37 meters) on average to feed, returning to the surface after a minute or two to breathe.  The streaming waters of Queen Charlotte Strait, located between Vancouver Island and mainland British Columbia, host a school of herring. Tidal action and the strait�s geography create tidal currents that can travel as fast as 18 miles (30 kilometers) an hour. The nutrient-rich water feeds the fish, and government quotas have helped the herring population rebound.  Whiskers at the ready, a group of striped-eel catfish in Indonesia�s Lembeh Strait peers into the camera. The only catfish species to live in coral reefs, the juveniles of striped-eel catfish (Plotosus lineatus) form dense schools shaped like a ball.  With eyes on their spawning ground, Atlantic salmon swim upstream during their spawning run. These wild Atlantic salmon (Salmo salar) are a rarity, as most Atlantic salmon today spend their time on fish farms.  Seemingly fearless, butterfly fish in the Tuamotu archipelago in French Polynesia swim around a coral reef. Their vivid colors and markings make butterfly fish (family Chaetodontidae) attractive aquarium fish, but many species require special attention and maintenance.  Horse-eye jack swim in a dense school in the Cayman Islands. Known to approach divers, horse-eye jack (Caranx latus) are associated with coral reefs and can reach lengths of more than 3 feet (0.9 meters).  These caged bluefin tuna (Thunnus thynnus) swim in Spanish waters. TheyThese caged bluefin tuna (Thunnus thynnus) swim in Spanish waters. They�ll be fattened for the sushi market, where their buttery meat fetches high prices. The bluefin has proved to be no match for a high-tech fishing industry, which has sent their numbers into a precipitous decline. serem juga yah klo liad ikan bergerombol kayak gini...  )kayak premannya ikan...  Terkait:
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