Re: Differences between A. Nijsseni & A. Pandurini?

[Mike & Diane Wise <apistowise@bewellnet.com>]

Kenny,

This is easy on mature specimens. Male A. panduro
(it isn't "Pandurini" anymore)
have pointed front dorsal spines. They aren't
extended, but they do come to points. On male A.
nijsseni the front dorsal spines appear flattened
or truncated, as on A. agassizii. There is an
excellent set of comparison photos on p. 647 of
Römer's Atlas. The color pattern is different,
too. A. panduro has a broad suborbital (cheek)
stripe while A. nijsseni has a mostly black gill
cover. The caudal spot on A. panduro is more
elongate (triangular) and extends well into the
caudal fin. The same spot on A. nijsseni is
smaller and more vertically oval in shape. A.
nijsseni have a flank patch that is quite large
while MOST A. panduro have a vertical flank bar
instead. There is however a rare form of A.
panduro, brought in about 4 years ago by Oliver
Lucanus, that has a nijsseni-like flank patch. On
A. panduro (Lucanus Big-blotch), as I call it, the
flank patch appears mostly in the belly region
instead of on the mid flank area as in A.
nijsseni.

Mike Wise

Kenny Vuong wrote:

>  Hi everyone -I'm new to the list and would like
> to know the difference between A. Nijsseni & A.
> Pandurini?  It's very confessing with the
> description from books.  Can someone shed some
> light into my eyes?  I would greatly
> appreciated.TIA,Kenny




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