pleco_breeder wrote:The larger ones appear to be mature, so I'm curious how big they are.
It seems ever more likely that in the area around Belo Monte in Rio Xingu Hypancistrus forms are evolving into several species, subspecies and so on. And it's not all about the pattern, they vary in eye size, fin shape, body shape, length, and they all seem to be able to produce variable offspring. Whether they crossbreed in nature is unproven, but it doesn't seem unlikely.
Most of the Xingu forms are known to produce some young every now and then that stand out and look very different from their siblings. Maybe those we define as L173 are such rare one-offs?
Yes and since LDA 19 and L340 are considered as the same...
Last year I posted pics of my 173b from Glaser, I was told in no uncertain terms by a number of folks that these fish were not 173s- people told me they were several different things. Now in this thread I statements like this
We are short, tall, fat or thin, all colors. We have all sorts of physical difference that make us all not look identical. Potentially, why should this be any different for plecos?
I think DNA is the only way to know the answers in terms of plecos. However, I highly doubt anybody will underwrite the research.
In the long run all of this will be moot, at least in terms of the fish unique to the Xingu. The fish exclusive to this river will soon be all gone in the wild and knowing which were which species or variant wont matter all that much any more.
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