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post #3 of (permalink) Old 01-26-2011, 10:32 PM Thread Starter
Wannabe Guru
DKShrimporium's Avatar
Join Date: Nov 2004
Location: PA/MD/DE tristate area
Posts: 1,413
T-rex and black tigers, poison blues

I started off with some breeder stock and right away did an outcross generation to a batch of top "black" blue tiger females. This was to spread the genes into a "seed" population for retrieval later after backcrossing. This reduces risk of losing the genes and also injects genetic diversity into the final production population.

The initial outcross tank also resulted in some of the original breeder stock breeding to other original breeder stock, resulting in pure strain offspring. Those F1s were removed and put into a first generation production tank. The remaining outcross siblings remained in a separate tank, to produce F2s, some of which would emerge as blacks. Those blacks then would be funneled out of the outcross tank and added into the first generation production tank.

The first generation production tank is now on its own F2s and is producing solid blacks, what I call scalloped blacks, T-rex blacks, poison blues, and I think I see some T-rex poison blues coming up, too, but must wait for them to mature to be sure. Once this tank is populated up, then I'll select upper grades from it to seed the second generation production tank.

My first goal is to get a large, genetically diverse population with "black tiger" genes throughout. So the initial breeder stock included high grade dark and red eye blacks, high grade OE blacks, T-rex blacks, and one poison blue OE. Once I have enough population to split out amongst these groups, they will each be refined separately. But the first goal was a robust population with a wider gene base.

Here are some recent photos:

This first picture is a black resulted from the outcross sibling cross in the outcross tank. Neither parent was black, but both were half black carriers, and a very small minority of their offspring turn out black. The next pictures are from the now first generation production tank.

Last edited by DKShrimporium; 03-06-2011 at 03:13 PM. Reason: removed pix to make space for more pix later in thread
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