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  • 1.
    Kullander, Sven
    et al.
    Swedish Museum of Natural History, Department of Zoology.
    Varella, Henrique Rosa
    Museu de Zoologia da Universidade de São Paulo.
    Wallace’s Pike Cichlid Gets a Name after 160 Years: A New Species of CichlidFish (Teleostei: Cichlidae) from the Upper Rio Negro in Brazil2015In: Copeia, ISSN 0045-8511, E-ISSN 1938-5110, Vol. 103, no 3, p. 512-519Article in journal (Refereed)
    Abstract [en]

    cichlid species first collected by Alfred Russell Wallace in the upper Rio Negro in 1852, lost during the transport toEngland but documented in drawings, is described as Crenicichla monicae on the basis of three specimens collected by the Swedish Amazonas Expedition 1923–1925. Crenicichla monicae is most similar to C. johanna, C. rosemariae, and one undescribed species which are characterized by cycloid scales, distinguishing them from other species of the genus in which most scales are ctenoid. Crenicichla monicae is recorded only from the lower Rio Uaupés and lower Rio Ic¸ana,tributaries of the upper Rio Negro, and is sympatric with the similar species C. johanna and C. lenticulata. It isdistinguished from all other species of Crenicichla by the color pattern in females, with scattered dark spots on the upperhalf of the side and on the dorsal and caudal fins. Crenicichla monicae is a member of the C. lugubris species group,characterized by very small scales in a large number along the middle of the side (89–126 scales in E1 row), blunt snout,and particular ontogenetic transformation of color pattern

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