DECORATIVE FISH PEMBENIHAN CORYDORAS 
   
1. Introduction 
Corydoras is one type of freshwater fish which attracted many lovers of ornamental fish and has a chance to export. Besides being used as a freshwater fish, can also be used as a cosmetic raw material production in developed countries.
Although this fish comes from South America, but since long been successfully cultivated in Indonesia. This fish is known pembudidayaannya easy.
2. Morphological characteristics 
Body shape is short and stout, the back is more curved than the abdomen, both sides are equipped with fish such as bone plates arranged in two rows, with two pairs of whiskers located in the upper jaw and lower jaw and body size can reach 12 cm.
Corydoras Fish can be cultivated in ponds of oxygen content in water is low. Environmental conditions suitable for these fish species are: pH 6-8, temperature of 21.5-28 o C.
3. Infrastructure and Facilities 
Corydoras fish in the maintenance of facilities necessary materials and equipment, namely: 
a. Parent fish Corydoras females and males 
b. Container maintenance of: 
~ Tub maintenance of male and female parent mass, as well as a place of spawning, or the aquarium measuring 60x40x40 cm. 
~ Tub maintenance larvae and seed mass 
c. Feed 
~ Feed the parent form or tubifex worms and mosquito larvae Chironomous. 
~ Feed the larvae of Artemia nauplii 
~ Feed for rearing fish Corydoras until ready for the market is tubifex worms 
4. Operational Activities 
4.1 Maintenance Master 
Corydoras Fish can dipijahkan minimum starting at age eight months. The best feed given to the maintenance of the parent is a lot of feed containing chitin as a good mosquito larvae for egg development. Also because Corydoras are 'bottom feeders' then the fish is more responsive to the kinds of foods such as tubifex worms or Chironomus.
The easiest way to distinguish the sexes is to look at body shape. Male fish have a body shape like terpedo, part of the back of the gills to tail tapering. Body more slender and smaller in size than females, and male fish dorsal fins look more pointy. Female fish's body is bigger than the male fish, and that was rounded belly with eggs.
4.2. Spawning 
Spawning is done in existing mass of cement, fiber tub or aquarium with the female parent ratio: male l: 2 or 1:1. Replacement of water daily, to maintain the water quality of spawning media.
Corydoras has type egg-laying by attaching to a substrate that is: plate glass, cut paralon (PVC), ceramic tiles or stone slabs.
Corydoras Fish eggs partially pulled out, so every day can be found in the substrate is attached eggs. Each parent can produce 200-350 eggs. The next set of substrate taken for incubated eggs on the container.
4.3. Hatching eggs 
Eggs are attached to the substrate, then incubated in the aquarium. Eggs will hatch in six days. During the hatching eggs, maintenance media were given anti-fungal drugs such as methylene blue 0.1 ppm. Degree of hatching eggs ranged 60-70%. Corydoras fish larvae in the aquarium is maintained until the age of seven days with feeding nauplius of Artemia.
4.4. Phase Maintenance 
Maintenance performed on a fiber glass container or a tub of cement to the size S (Small = small) with dense stocking of 20-30 tails / liter. During one month to reach the size M (Medium = being) is a dense stocking 10-15/liter and ready to be marketed.
Next maintenance is more directed to the procurement of the main candidates, because usually the size L (Large = large) declining market demand. Dense stocking in the maintenance of the size M to L size is 5 fish / liter.
The feed is provided for the maintenance of fish until ready to be marketed in the form of tubifex worms. 
4.5. Fish Health Management 
Several types of parasites that attack the fish Corydoras often are: Trichodina sp, Epistylis, Glossatella sp and Chillodonella sp. While attacking the bacteria that is usually the secondary infections that occur due to injuries due to handling, or parasites that attack resulted in injuries. Types of bacteria found in the Aeromonas hydrophilla.
Treatment for parasitic diseases is to use formalin 25 ppm, 500 ppm of salt. As for bacterial diseases using 10 ppm Oxytetracycline by soaking.
Kamis, 10 September 2009
Rabu, 09 September 2009
myOrnamental fish
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