Thursday, July 8, 2010

BREEDING DANIOS=ZEBRA DANIOS..

.....leopard danio...


.....zebra danio......


At the onset of the light cycle, zebrafish will generally initiate breeding behavior. In a tank that has been marbled, the eggs collect between the marbles and thus the fries can escape predation. However, when no marbles are in the tank, the fish will rapidly consume the eggs. By eating the eggs, the fish are cycling the protein within the tank, reducing the energy loss experienced in egg production and breeding behavior. By marbling a tank, the egg protein source is denied and energy loss to a tank is extensive, which is why fish should be put over marbles no more frequently than once per week. On days when the fish are not over marbles, they should be fed several times per day with protein rich foods to compensate for their energy loss.


Marbling a tank

The fish should be fed approximately 30 min before adding marbles to give the fish sufficient time to consume the food. When the fish have stopped feeding, it is important to siphon excess food and debris from the bottom of the tank.
Add marbles to a freshly siphoned tank by slowly dropping them through the water to the bottom of the tank. The tank bottom must be completely covered with marbles. Approximately one liter of marbles is enough to cover the bottom of a ten gallon tank properly. Try to use big marbles as smaller ones will give easy access to fishes...


Removing eggs from a tank

Remove eggs from the tank using a siphon. To siphon eggs, prepare another tank which is well cycled to receive the eggs and water. Place this tank near the main fish tank, and below the water line of the main tank. To operate the siphon, place the siphon tube into the tank. Draw water by mouth into the siphon, and quickly place the flexible tubing into the fry tank. Siphon the bottom of the tank in a methodical manner to collect the eggs.Its said that siphons are to be used only once but I recommend nice rinsing and reuse.Well who in their sane mind will buy so many siphons...

Removing marbles from a tank

Marbles should be removed from tanks promptly. After siphoning, use a net to remove the marbles. Clean them thoroughly.

Cleaning marble eggs

Eggs obtained from the bottom of the main tank will have tonnes of fish POO.So clean them well by gently running clear water through it.

Because fish producing eggs over marbles expend more energy it is important to provide them with a diet that compensates for the energy lost in egg laying and breeding.

In general, it is better to feed the fish several times (four to six) lightly than to feed them once or twice heavily. Multiple light feedings allow the fish better opportunity to utilize the food sources and preserves tank water quality by minimizing the amount of food left rotting on the bottom of the tank. As a "rule of thumb", fish should not be given more food than they can consume in five minutes. If fish are still eating after five minutes, they are probably being overfed, so reduce the amount next time. If, after five minutes, there is uneaten food in the tank, and the fish are no longer feeding, the excess food should be removed either with a siphon or a net.

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