Re[2]: Hybrid Tris (was Re: Lets be careful)

GWLANG at ccmail.monsanto.com
Sun, 26 May 1996 16:34:59 -0500

Ok Andrew I will throw in something to cause a stir here. What if out
crossing to another tribe eg Pascoe river, was the only way to save a
particular tribe in captivity. This would be necessary when there was
only a single specimen and to breed it would need to be outcrossed. If
this were done carefully and with great attention to detail in about six
generattions (at least for plants) you would have something that was near
isogenic with the starting animal and you would have a breeding
population of something that may have otherwise been lost.
Hoping this draws some comment
Peter

YOU LET THEM GO! Especially if we're not talking about something endangered.
You take a nice block of wood and crack yourself in the head and promise not to
be so careless with your breeding program again! :-) I've lost enough fish
myself but I would never consider crossing tribes or species. Fish aren't
plants and unless they are endangered it's not worth the problems. A few years
back in the US we got some pretty dull looking Tris that were supposed to be
Goyder Rivers. I had heard a rumor later that someone in Oz had accidently
crossed Giddy's with Goyders and that these were the dull looking fish that
made it over here. No fingers pointed as they didn't come through the regular
ANGFA channels but "appeared" on the american market. We all know how bad some
of the dealers can be on either continent,(note comments previously about
dealer who sold Coen R. as Lake Tebera rainbows) and I'm sure one of them was
involved. It took us a long time to wipe out that mistake, which is still
filtering around. Even if you "fixed" the proper characteristics for a certain
population how long would it be before some of the other traits came out and if
you passed the fry onto others, would they know what to destroy and what to
keep? It's just not worth the problems I wouldn't cross them under any
circumstances. I sure this was the comment that you were looking for :-)

Gary Lange
RSG/ANGFA