Re: missing messages (A. tucurui)

[Marco "Túlio" Lacerda <marcolacerda@ax.apc.org>]

> >From what I gathered from the article posted by Mike wise this fish was found
> in open water that was either soft but very base, or hard but quite acidic (I
> get confused easy- too much to remember).  Is it possible the original article
> is describing a different fish than the one Marco is collecting and breeding
> in the swampy places?  Or maybe they moved because of the dam?  Several
> Victorian Lake cichlids have changed biotopes and adapted in order to avoid
> the predation of the Nile Perch which was introduced there.
> 
> If they have had to find new "digs", this would explain the low fecundity, as
> they are not really happy there in those particular water parameters.
> 
> Not trying to start an nasty argument, just wanting to clear this up for my
> ignorant self.
> 
> Bob Dixon

Dear Bob:
the collecting point was told by me through a fisherman that collected 
there with Arthur Werner, which I guess was the first (or one of the 
first) to collect this species.
The dam is not that close to the biotope, so it seems not to be 
disturbed by it.
There are only farm activities in the region, and those activities may 
have perhaps altered the biotope, but I cannot assure it.  Normally farm 
activities include cattle farming, and for that purposes forested areas 
are cut to produce open areas, a need for grass growing (food for the 
cattle).