Sunday, September 13, 2009

FRESH WATER PRAWNS






Prawns (Family:pandalus ) are the higher of the commercial species of shrimp in Malaysia fresh water, all belonging to the family Pandalidae. Prawns generally live for four years. They start their lives as males and mature at age 1, They function as mature males for two seasons and then transform into females in the final year of their life.

Prawns live in rocky habitats from the intertidal zone to a depth of 100 ft, but normal adult habitats is between 40 and 50 ft.

Mature prawns breed in the autumn. The female carries fertilized eggs on small oppendages of the abdomen known as pleopods or swimmerettes from July to January , at which time the larvae hatch and spend up to 3 months in the fresh water column before settling on the bottom.

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