Publication2 med aquascape Publication1cs complete | Page 190
As part of a recent field trip of the CARAC Anni-
versary I went to Sabinas Hidalgo, in the state of
Nuevo Leon where I had the opportunity to pho-
tograph Herichthys cyanoguttatus in the wild. I
have to say this place is beautiful and has a very
natural part in which there are buildings, pools
and barbecues and so on, but we were in the part
where the natural beauty was still intact! There
was only a small grill and a great shade of a huge
tree in one of the arms of the river. This particular
part does not have a great flow to it, although
most of it is channelled through drainage pipes, I
suppose to use for the nearby village?
I must say that this variety of H. cyanoguttatus is
very striking for their colour. Unlike other popula-
tions, such as Bustamante in the state of Nuevo
Leon, most features shades of brown and purple
eyes, this type of shades is also present in other
populations, but with a much lower incidence.
It is likely that the type of feeding influence the
final colour of the fish? Scientific studies should
be made to determine this with certainty, which I
doubt is on the list of some scientist now. What-
ever the reason, the population is sui generis. I
noticed that the body also has a slight elongation
compared to the population of Bustamante or the
Laguna de San Ignacio, Nuevo León. One can say
that the speciation process is on-going and if the-
se varieties don’t disappear, eventually they will
be a distinct species.
Pic 1
Pic 2
Pic 3
Pic 1: In this town the water is hot. It is main-
tained in a 38 ° C throughout the year due to
some volcanic activity. P