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Endocardiosis in Tetras (Family Characiformes)
Journal of Comparative Pathology, 2019Proliferative, myxomatous change was identified in the cardiac valves (i.e. valvular endocardiosis) with extension into some cardiac walls (i.e. mural endocardiosis) of five tetras (four neon tetras [Paracheirodon innesi] and one rummynose tetra [Hemigrammus rhodostomus]).
Judy St Leger
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Monophyly of the Agoniatinae (Characiformes: Characidae)
Zootaxa, 2013The Characidae is the most diverse family of Neotropical fishes, currently encompassing more than one thousand valid spe-cies. Some subgroups within this family still lack phylogenetic definitions, being diagnosed on the basis of combination of characters, a common procedure in pre-cladistic studies. Agoniatinae, currently composed by two valid species,
Dagosta, Fernando C.P., Datovo, Aléssio
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Taxonomic revision of the genus Anostomoides (Characiformes: Anostomidae)
Zootaxa, 2019A taxonomic revision of Anostomoides is herein presented based on a comprehensive revision of specimens deposited in fish collections and the literature. The present revision proposes that A. laticeps is a junior synonym of A. atrianalis, while A. passionis is a junior synonym of Leporinus nattereri, and the latter is thus transferred to Anostomoides ...
Assega, Fernando Massayuki +1 more
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Cretaceous Research, 2021
Abstract Fossil characiform dentaries from the “Lowerverse locality” in the lower Campanian portion of the Aguja Formation of West Texas represent a rare Late Cretaceous occurrence of characiform fishes in North America. Two morphotypes are represented.
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Abstract Fossil characiform dentaries from the “Lowerverse locality” in the lower Campanian portion of the Aguja Formation of West Texas represent a rare Late Cretaceous occurrence of characiform fishes in North America. Two morphotypes are represented.
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Reproductive Characteristics of Characiformes
1992The Characiformes, as defined by Fink and Fink (1981), are a major group of ostariophysean fishes confined to the freshwaters of the Neotropics and Africa. They range in size from miniature, fully mature species under 20 mm standard length (Weitzman and Vari 1988) to species such as the tambaqui (Colossoma macropomum) and the dourado (Salminus ...
Naércio A. Menezes +1 more
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Heterochromatin and karyotype reorganization in fish of the family Anostomidae (Characiformes)
Cytogenetic and Genome Research, 1991Mitotic chromosomes of four fish species of the family Anostomidae, belonging to the genera <i>Leporinus, Leporellus, </i>and <i>Schizodon, </i>were studied. With 2n = 54 meta- and submetacentric chromosomes, this family appears to be characterized by marked karyotypic stability. Although perceptible differences exist, mainly in
Galetti, P. M. +3 more
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Ionoregulatory Characteristics of Non–Rio Negro Characiforms and Cichlids
Physiological and Biochemical Zoology, 2017We examined ionoregulatory characteristics of two species of characiform fish and two species of cichlids that are not native to the Rio Negro, an extremely ion-poor, acidic tributary of the Amazon River, in order to gain insight into the origin of the specializations possessed by Rio Negro fish.
R J, Gonzalez, S L, Jones, T V, Nguyen
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Intromittent Organ in the Genus Monotocheirodon (Characiformes: Characidae)
Copeia, 2006Abstract We herein document intromittent organs in four Peruvian populations of inseminating fishes of the family Characidae, genus Monotocheirodon, which may comprise new species. All females histologically analyzed from these populations, as well as a female of Monotocheirodon pearsoni, had spermatozoa within the ovary, confirming insemination.
John R. Burns, Stanley H. Weitzman
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