Two new endemic species in the Midas cichlid species complex from Nicaraguan crater lakes:Amphilophus tolteca and Amphilophus viridis (Perciformes, Cichlidae)
Hans Recknagel, Henrik Kusche, Kathryn R. Elmer and Axel Meyer aqua, International Journal of Ichthyology, pp. 207-224, Volume 19, Issue 4 – 25 October 2013 Abstract The Neotropical Midas cichlid species complex (Amphilophus citrinellus Günther 1864) has become a model system for investigating the mechanisms of speciation and adaptive radiation.
Volume 4, Issue 2 – December 2000
Gavin D. Alexander and Colin E. Adams: The phenotypic diversity of Arctic charr, Salvelinus alpinus, (Salmonidae) in Scotland and Ireland, pp. 77-88
Gavin D. Alexander and Colin E. Adams aqua, International Journal of Ichthyology, pp. 77-88, Volume 4, Issue 2 – December 2000 Abstract The high phenotypic variability of Arctic charr and the nature of polymorphism in the species are briefly summarized. Photographs of Arctic charr from populations in Scotland and Republic