Common carp's preferred habitat is freshwater with sufficient depth (not too deep) and these waters have moderate currents, such as on the edge of a river or on the edge of a lake. Usually these fish will grow well in areas with an altitude of 150-600 m above sea level and temperatures around 25-30 degrees Celsius.
Common carp can live and develop well in aquatic environments that have good water quality. Water quality is good for living and developing Common carp fish, namely waters that have a pH of 7-8, dissolved oxygen> 5 mg/liter, NH3 <0.02 mg/liter, water turbidity 40-60 cm, carbon dioxide 2-11 mg/liter, NO2 <0.05 ppm, alkalinity> 20 mg/liter, total hardness> 20 mg/liter.
Common carp is classified as an omnivorous fish species whose main diet is plants that live on the bottom and edges of waters. Common carp can also eat live worms in the aquatic environment.
Common carp reproduce by laying eggs. In their natural habitat Common carp spawn at the beginning of the rainy season, but in fish farming activities, Common carp can be spawned throughout the year.
The spawning process usually occurs in the middle of the night until early morning. Common carp eggs are adhesive (sticky to stick) so that in the spawning process, Common carp requires a substrate (a place to stick the eggs).
The place for attaching these eggs is usually grass prepared by the parent fish before the spawning process. Common carp eggs are round and clear in color. In general, the diameter of common carp eggs ranges from 1.5 - 1.8 mm with weights between 0.17 - 0.20 mg.
In aquaculture, Common carp are maintained in a rearing container in the form of a fish pond. The fish pond that is used can be made of an earthen pond or a pond made of walls.