Fading Genetics

[RD.]

And these threads I posted are real action proves.

What on earth are you talking about? What exactly are the threads that you posted supposed to prove?

As previously explained in detail, the trait that causes "fading", is amelanism, which is a recessive trait.

If both parent fish carry a gene for a recessive trait, then some of the offspring will be born with that trait. This is exactly why one can breed two normal looking Red Dragons, and end up with some of the fry being faders, even though neither of the parents were faders. Both parent fish simply carried the same homozygous recessive allele.

That doesn't make the trait dominant.

This a very common situation with hybrid fish that have been cross bred & inbred to the enth degree, and that can possibly have god only knows how many different sets of genes in their genetic make up.

So unless y'all have a pair of genetic x-ray glasses, or bred the hybrid fish from scratch, you have absolutely no idea as to what type of genes are involved in the fishes overall genetic make up.

This isn't some kind of ancient Chinese secret known only by FH breeders, these breeding principles have been used by breeders of ornamental fish for over 100 years.

This is a rather simple concept, one that has been known & used by fish breeders for many many years, long before FH were created.

Recessive allele: An allele whose phenotype is expressed only when an individual has two copies of the allele (homozygous recessive). The pairing and expression of detrimental recessive alleles helps explain inbreeding depression.

It's the exact same principle used by breeders of EBJD.

http://jackdempseycichlid.com/general/breeding-electric-blue-jack-dempsey-cichlid/

another example with angel fish ........

http://www.angelsplus.com/ArticleGenetics.htm (read all 4 pages) and this was written by someone that has been a commercial breeder for longer then most people on this forum have been alive.

It's also one of the main reasons why FH are often genetically weak fish, that only live for a few years before some of their detrimental recessive alleles catch up with them, causing what most people would consider a fairly short lifespan compared to non hybrid cichlids.

I call it sloppy breeding, as most FH breeders do not breed for genetically strong fish, or longevity, they simply breed for aesthetics in order to cash in on the latest fad look. In some cases hundreds of $$$ are spent on purchasing a fish that doesn't even make it to its 5th birthday. But that's another discussion best saved for another day ........

 

[F1 VET]

What on earth are you talking about? What exactly are the threads that you posted supposed to prove?

As previously explained in detail, the trait that causes "fading", is amelanism, which is a recessive trait.

If both parent fish carry a gene for a recessive trait, then some of the offspring will be born with that trait. This is exactly why one can breed two normal looking Red Dragons, and end up with some of the fry being faders, even though neither of the parents were faders. Both parent fish simply carried the same homozygous recessive allele.

That doesn't make the trait dominant.

This a very common situation with hybrid fish that have been cross bred & inbred to the enth degree, and that can possibly have god only knows how many different sets of genes in their genetic make up.

So unless y'all have a pair of genetic x-ray glasses, or bred the hybrid fish from scratch, you have absolutely no idea as to what type of genes are involved in the fishes overall genetic make up.

This isn't some kind of ancient Chinese secret known only by FH breeders, these breeding principles have been used by breeders of ornamental fish for over 100 years.

This is a rather simple concept, one that has been known & used by fish breeders for many many years, long before FH were created.

Recessive allele: An allele whose phenotype is expressed only when an individual has two copies of the allele (homozygous recessive). The pairing and expression of detrimental recessive alleles helps explain inbreeding depression.

It's the exact same principle used by breeders of EBJD.

http://jackdempseycichlid.com/general/breeding-electric-blue-jack-dempsey-cichlid/

another example with angel fish ........

http://www.angelsplus.com/ArticleGenetics.htm (read all 4 pages) and this was written by someone that has been a commercial breeder for longer then most people on this forum have been alive.

It's also one of the main reasons why FH are often genetically weak fish, that only live for a few years before some of their detrimental recessive alleles catch up with them, causing what most people would consider a fairly short lifespan compared to non hybrid cichlids.

I call it sloppy breeding, as most FH breeders do not breed for genetically strong fish, or longevity, they simply breed for aesthetics in order to cash in on the latest fad look. In some cases hundreds of $$$ are spent on purchasing a fish that doesn't even make it to its 5th birthday. But that's another discussion best saved for another day ........

Wow man, interesting post, seems like you nailed it then went back and nailed it again. I wish you knew this much about piranhas and such..... Either way I enjoy reading your knowledge :thumbup:

Go S. Vettel #1 rb8

 

[RD.]

All I really did was explain one of the basic fundamental principles that are involved in breeding ornamental fish. Anyone with access to google could find these same answers in pretty short order. Anyone that has spent a few years selectively breeding ornamental fish already know what I am talking about.

When one starts pairing up random genes it's anyone's guess as to exactly what the results will be in the offspring. With a bit of time & work one can begin to fix and/or eliminate certain phenotypes. This is how new FH strains are created, not through some kind of black magic.

I used angelfish as one of the examples as just like all vertebrate organisms angelfish carry two copies of each gene, one which is inherited paternally, one which is inherited maternally. We know that a number of those phenotypes are the result of double recessive genes, such as in the Gold, Halfblack Locus, Pearlscale Locus, and Albino Locus.

In those color variants both parent fish must carry the recessive allele for that trait, just as both FH parents must carry the recessive allele for amelanism to create "fader" offspring.


It's fine for people to post their personal hypothesis about some of these things, but without anything to actually back that personal opinion up, it doesn't amount to anything more than just that, a personal opinion based on zero facts.