>From articles published in the UK the distinction between the two named species is that parilus has a metallic like marking along the dorsal fin and nudiceps does not. They could still be colour varieties of the same fish though. Ken. On Wed, 25 Mar 1998 07:48:21 -0800 (PST) "Darren J. Hanson" <djhanson@calweb.com> wrote: > >N. Nudiceps UK 4.00e (lg. fish bought a pair inclined to believe they are N. > >parilus) > > Kaycy here, by my understanding while being the publisher of the > Apistogramma Study Group newsletter, The Apisto-Gram, there was an article > in issue #53 written by Tom Wojtech, that N. nudiceps and N. parilus, are > the same fish. Here's a quote from his article: > > "A couple of years ago a bunch came to my local pet store; but by now > everyone knew that the fish formally known as N. nudiceps was now N. parilus." > > I, myself, don't know if they are the same or not, but I scanned the photos > into the article and their markings were basically identical. > > Just an observation on my part. > > Kaycy > > > -------------------------------------------------------------------------