> I have had X. gordoni already and think it isn't endemic to the Cuatro
> Cienegas basin. Indead, as far as known it is only known from the type
> locality (Laguna Santa Tecla) and I hadn't heard before that it would occur
> also in the Cuatro Cienegas basin. As president of the German Livebearer
> Association, editor of their journal and book author on livebearers I have
> many informations on livebearers reveived, however, that one was new.
> Maybe these X. gordoni have been introduced there.
Laguna Santa Tecla is considered to be a part of Cuatro Cienegas. It
now also occurs outside of the basin due to the canals that have been
constructed.
> Of course also G. marshi occurs in the Cuatro Cienegas basin, but also
outside. > It's not endemic there.
That is true, however, there are two "forms" found in the basin. I think
one is spotted, the other is not or something like that. No one has
really looked at them that closely.
> pure enthusiasts. Maybe G. marshi invaded the basin lateron and the
shallow waters
> are the only area where G. longispinis can still exist. Thus it is
strongly endangered. >
I wouldn't call any of the fish in Cuatro Cienegas as strongly endangered
right at this point. However, if some exotics got in (presently there
are none) this could change rapidly. Undoubtably there have probably
been a series of invasions into the basin by various species.
Also, you should set you number of characters per line about 10
characters less than it presently it, otherwise when I reply your lines
rap on some peoples mail programs and it makes reading it more difficult
in my whining opinion. :-)
Tootles
Peter Unmack