Mylochromis lateristriga, breeding male. (Compare the very similar, but more specialized, Lichnochromis acuticeps which, Oliver suspects, is the sister species of M. lateristriga.) Scroll down for two closeups. All photos copyright © 1997 by M. K. Oliver.
In the first closeup, notice the
soft part of the dorsal fin, with the small, dark-edged oval orange
spots from which anal fin non-ocellated egg-dummies are believed to
have evolved; from these, in turn, ocellated egg-dummies surrounded
by a depigmented area are derived. Also, note the orange streaks
on the caudal fin, mostly between the fin's rays, quite striking
against the pale blue background color of the fin and markedly
different from the oval spots of the dorsal fin.
In the second closeup, below, look for the anal fin's highly
unusual elongate, gray-edged white markings (egg dummies?), on the
equally unusual orange-red background of the fin.
|Last Update: 13 June 1998
Web Author: M. K. Oliver, Ph.D.
Copyright © 1997-2020 by M. K. Oliver - ALL RIGHTS RESERVED