|Written by Administrator|
|Tuesday, 15 January 2008|
Breeding guppies takes no special skills, simply leaving a male and female guppy in a tank together will produce results, but breeding superior fish with very fixed qualities of colour, finnage and vigour is a different matter. Quality requires great deication, detailed record keeping, the ability to make sound judgements based on your results and a degree of luck for the random nature of genetics.
Your prime objectives should be producing fish in good health and vigour. There is sure to be a compromise between health and your desired characteristics but never allow that to happen unless there are no other options you can make.In which case make health the priority once you've acheived your characteristic objective.
Limit Your Objectives
As an ambition breeder you will have many goals, but try to limit your to a few at first. You may want to improve fins and coloration, as well as have examples of the different varieties. But the more varied your goals the less success you may have with colour, fins, vigour or conformation. Once an understanding of genetics is gained this comment will be appreciated, especially when it comes down to the large number of offspring taht would become involved. Keep it simple at first. It is important if you keep a number if varieties in the same display tank to concentrate your breeding program on a small number of objectives. Remeber if you do keep a mixed variety display tank that you shouldn't use the females from that tank for breeding. A number one rule that is important to remember is that a female guppy is able to store sperm that can be used to fertilize numerous broods You'll never be able to be sure of the father unless you use a virgin female with a specific male. This fact makes guppy breeding more complicated that breeding any other animals.
There are two ways in which you can go about improving your guppies. One is by assessing a number of feature together, then selecting from those fish that meet your overall standard. The other is to concentrate on one or two features at a time, then concentrate on other features only when the desired result in the former is acheived. Progress is slower when you you are developing a number of features than if you limit your results to one or two. But either option achieves your objectives. Its your choice, but its always best to start simply. When tandem breeding ( one feature at a time) is your method, be careful that, in moving to the next stage of your priorities, undue deterioration in the standard of the feature has been improved upon and is not a consequence. To limit the possibilities of this happening a "line" breeding program is encouraged but there are other methods you can use.
Line Breeding/Line Crossing: This method is also a form of inbreeding, however here you start by keeping the fry from two females (either from your new trio or chosen fry from a drop) separate, so that they form two distinct lines. Since you cannot mix batches, this takes more tanks. It is best to choose breeders differently for each line; for instance, in one line, you may pursue a large body mass, and with the other, you may concentrate on finnage. The purpose is to help maintain your established strain, since each line becomes distinct and more distantly related; also, you can have your own two lines to cross occasionally. When you want to increase the size in your fish, for instance, or make an outcross to avoid too much inbreeding, taking someone else's line to do this with is risky and you may loose the traits in your line that you have worked hard to achieve, as well as loosing the homozygous quality of your guppies.
|Last Updated ( Tuesday, 15 January 2008 )|