Genetika-guppy.my1.ru

When we disinfect nets or siphon hoses when going form tank to tank, or when we use medications for disease outbreaks, we create weaker fish.

6 years ago, I experienced up 95% viral wipeout. Once, an entire strain of German Red Lace Snakeskin was wiped out-- hundreds of fish! But I had a very few females survive, and they had fry. Now my German Red Lace are stronger than goldfish. They have been inbred for 5 years now.

Today, if I see a really old fish get Ick, Popeye, or Fungus, I do not even remove from the tank. They are no danger to the younger, healthy fish.

See this article by Anthony Fischinger on Fancy Guppies UK:

http://www.fancyguppies.co.uk/page68.htm

Добавлено (09.05.2010, 09:09)
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Also, not all wild traits are dominant.

The erect ears of the wild Wolf are recessive. The dominant ear carriage in the canine is a hanging or drop ear as in the Bloodhound. This dominant trait was obviously selected away from in the Wild, and once a Dominant trait is lost, it is lost for good. So all wolves have erect ears. But, technically, it is a recessive.

If a guppy breeder reaches a "bottleneck" of inbreeding depession, sometimes the population will come through even stronger than the original outbred stock. The Llewelyn English Setter, and many old English Foxhound packs are examples of the "PURE VIGOR", as opposed to "hybrid vigor"

The Canadian Inuit Dog, or Greenland Dog has very a very high inbreeding coefficient; and, yet, is far healthier with fewer problems than, say, a German Shepherd. In fact, hip dysplasia is unknown in the Greenland or Canadian Eskimo Dog. Where mortality is high due to harsh environmental culling factors, inbreeding is a very efficient way of breeding.

Homozygosity, heterozygosity, recessive, dominant, inbed, outbred-- it all matters not. So long as one breeds the wrong two fish, one will have problems.

My German Red Lace Snakeskin and HB Blue Deltas are as strong as any wild guppy because I "proof" them by subjecting them to less than optimal conditions. They can easily take cold, heat, high nitrates, dissolved organics, low oxygen, viral, and bacterial assaults with ease. Those that could not take the conditions or were not fertile never contributed to the population. I select all my breeders for conformation from a colony tank, and fry must survive high predation from adults before even gaining maturity-- makes for really hardy fish. If I have 50 fry in the colony tank, those are the survivors from 20-30 drops of fry! Those 50 fry are certified strong, and worthy of being bred if they grow up to be nice specimens.

I have the best guppy from 5 liters tank and 18-20 C temperature.

Food - flakes, nitrates much, 1 liter per fish.

Very strong immunity and best phenotype.

Now, I can net out nice male in one tank, walk across house and place in tank with females. No problems!

I worry not!

I find guppy fed 100% flakes just as big as guppy fed live artemia or Grindal Worms. No difference! I believe size is determined mostly by genetics. Nitrates not much important.

My friend, Anthony Fischinger, has studied guppy hardiness extensively, and has found modern techniques to be problem. I see too. My fish are very strong now.

Normal immunity level is very very important for live.

As immunologist I agree with you and Vladimir 100%.

In America, IFGA Show Guppy Breeders keep very clean tanks, no dirt, and no plants. No substrate and very little bacteria. No infusoria. 10%-40% water change every DAY! Fish then die when sold to new home very often.
Show guppies fed 4-8 times/day, with 2-3 feedings of live baby brine shrimp(artemia). Frozen beefheart. No worms.
Fish must have 1:1 caudal(tail)-to-body ratio. Such fish are very old, and lie on bottom of tank. The Germans say American fish vigor is "frightening." The European IKGH fish with 8:10 caudal-to-body ratio may achieve 1:1 caudal-to-body ratio when very old. But such fish are past their prime. Some breeders then cut off tail with razor blade so old fish can catch females to breed.

Water is aged in 55 gallon vats and passed through UV (ultraviolet light) filter to remove pathogens. American guppies have little immunity for disease.

Anthony Fischinger raises his guppies outside in 55 gallon drums with cow dung in bottom! LOL He might even pee in tank! But his fish are very strong and will survive up to 50% from even a strong viral infection.
He sent me Breeder Lace Snakeskin Male who is 2 years old and very big and active. Stll breeds with females!

А его друг держит веерохвостных гуппи на улице в емкости с навозом на дне.
Они очень крепкие и даже при сильной инфекции 50% всегда выживает без лечения.

I fed newly-hatched artemia always, and kept tanks clean. I always had problems-- split tails and fin rot.

All my life, for 30 years, I had raised Betta in green pond water, so I tried with guppies. It worked!

I tried many live foods with guppies, but found no difference. Now I just feed good flake. In summer, I do raise Daphnia and Mosquito larvae for guppies outside.