Raising Fry
Raising the fry can be easy with many species but almost impossible with others. Newly hatched friendships will often be sufficient for their needs, providing the fry are of a reasonable size (pinhead or larger), but smaller fry will need smaller foods. In raising fry the biggest challenge is to keep water clean. The growing fry needs a lot of food. If you are adding food to the tank of the fish than quality of the water should be enormously high. Fry needs good quality of water as comparison to fully developed fish. They need frequent change of water so that the water will remain clean. Mostly the fry is not comfortable with the food of fully developed fishes because they are too small therefore fry needs special food to eat.
Proprietary liquid fry foods are good, but also consider raising infuser as a first food. These are single-celled creatures that live on decaying vegetable matter. Start culture by placing potato peelings in a jar and filling this with hot, nearly boiling water.
Leave this in a warm sunlit place. After a couple of days the culture will go cloudy and in another few days it will clear again. Once cleared, you can harvest the tiny creatures by simply pouring small amounts of the liquid into the fry tank. Feed the fry little and often, 4-5 times a day. As they grow, wean them onto hard-boiled egg yolk and then finely crumbled flake foods. There are some commercially fry food also available in the market.
A colorful pair of rainbow wagtail plates (Impostors variants). The plumper female is at the top. Along with guppies and swordtails, these fish reliever and are easy to breed in the aquarium. The only danger is that the parents may eat the inventorying.
A proud male paradise fish (Macrocodes opercula) guards terribleness he has created at the water surface by blowing air bubbles into a sticky mass. Plant fragments incorporated into the nest may make it quite bulky. This anabatic species is ideal for beginners to breed because it adapts to a wide range of aquarium conditions. Eggs released by the female are fertilized by the male and gathered up into the nest. The tiny fry hatch in about 24-36 hours and will flourish on liquid food or infuser.
A midas, or lemon, cichlid (Chinchillas citronella) with a shoal of fry. This Central American cichlid will breed readily in the aquarium, although not without a degree of drama during the proceedings. The male may be so aggressive in his courtship that it might be best to separate the pair on either side of a glass partition with a small gap at the bottom.
As the female lays her eggs on one side of the partition, the male produces sperm on the other side, but enough can flow under the glass to fertilize at least some of the eggs. If the pair is not separated, they will lay 600-800 eggs on a flat rock. The female digs nearby and the newly hatched fry are placed in this ‘nursery' for the first few days. Both parents watch over and protect the raising fry.
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