Results 211 to 220 of about 2,788 (258)
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Zoological Journal of the Linnean Society, 2023
Homology is the foundation of any comparative evolutionary study, and as structures previously considered homologous are found to be convergent, and vice versa, terminology needs to be changed to reflect homology. The dorsal- and pectoral fin-spines of
Kole M. Kubicek +2 more
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Homology is the foundation of any comparative evolutionary study, and as structures previously considered homologous are found to be convergent, and vice versa, terminology needs to be changed to reflect homology. The dorsal- and pectoral fin-spines of
Kole M. Kubicek +2 more
semanticscholar +1 more source
Ontogeny and homology of the claustra in Otophysan Ostariophysi (Teleostei)
Journal of Morphology, 2006We studied the ontogeny of the claustrum comparatively in representatives of all otophysan subgroups. The claustrum of cypriniforms has a cartilaginous precursor, the claustral cartilage, which subsequently ossifies perichondrally at its anterior face and develops an extensive lamina of membrane bone.
Ralf, Britz, Matthias, Hoffmann
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The Gill Arches of Psilorhynchus (Ostariophysi: Psilorhynchidae)
Copeia, 2007Abstract Members of the genus Psilorhynchus are small cypriniform fishes adapted for life in the fast flowing streams of the Ganga–Brahmaputra drainage of India and Eastern Nepal and the Ayeyarwady drainage of Northern Myanmar and adjacent China. The systematic placement of Psilorhynchus within existing cypriniform classification schemes has been ...
Kevin W. Conway, Richard L. Mayden
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Zebrafish, 2021
The chromosomes of the dogtooth characins, fish species of the family Cynodontidae, have only a relatively small amount of heterochromatin, including the terminal portion.
V. S. Pinheiro Figliuolo +5 more
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The chromosomes of the dogtooth characins, fish species of the family Cynodontidae, have only a relatively small amount of heterochromatin, including the terminal portion.
V. S. Pinheiro Figliuolo +5 more
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Ichthyology & Herpetology, 2021
A new species of ghost knifefish is described from the Rio Uatumã at Cachoeira do Miriti, Amazon basin, Brazil. It is distinguished from all species of Apteronotus by the absence of a clear stripe from the chin to the dorsal portions of the head and/or ...
Luiz Antônio Wanderley Peixoto +4 more
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A new species of ghost knifefish is described from the Rio Uatumã at Cachoeira do Miriti, Amazon basin, Brazil. It is distinguished from all species of Apteronotus by the absence of a clear stripe from the chin to the dorsal portions of the head and/or ...
Luiz Antônio Wanderley Peixoto +4 more
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Zootaxa, 2021
The occurrence of the species of the genus Brycon (Characiformes: Bryconidae) in Esprito Santo State is herein reviewed. Brycon opalinus, a species formerly known only from the upper rio Paraba do Sul and upper rio Doce basins, is recorded for the first ...
L. Rodrigues +6 more
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The occurrence of the species of the genus Brycon (Characiformes: Bryconidae) in Esprito Santo State is herein reviewed. Brycon opalinus, a species formerly known only from the upper rio Paraba do Sul and upper rio Doce basins, is recorded for the first ...
L. Rodrigues +6 more
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Miniaturization in Alestidae (Ostariophysi: Alestidae)
2020Alestidae (African tetras) is one of the most species-rich families of the order Characiformes and exhibits a pronounced diversity of body size. Two independent miniaturization events (a drastic phylogenetic decrease in body size) have been identified in Alestidae.
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The pectoral anatomy of selected ostariophysi I. The characiniformes
Journal of Morphology, 1976AbstractThe muscles and bones of the pectoral fin of Serrasalmus nattereri, the piranha, resemble those of generalized, lower teleosts with specializations related to a body shape adapted for high‐speed carnivory; the pectoral fins being highly mobile with strong ligaments to the rays.
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Myanmar (Teleostei: Ostariophysi: Siluriformes: Erethistidae)
2003Britz, Ralf, Ferraris, Carl J. (2003): Myanmar (Teleostei: Ostariophysi: Siluriformes: Erethistidae).
Britz, Ralf, Ferraris, Carl J.
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Journal of Vertebrate Paleontology, 2020
The Sangkarewang Formation of the Ombilin Basin in Sumatra, Indonesia, has been known for its fossil fishes for over 150 years, and a monograph on the fishes from freshwater deposits of the basin was published over 80 years ago.
A. Murray
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The Sangkarewang Formation of the Ombilin Basin in Sumatra, Indonesia, has been known for its fossil fishes for over 150 years, and a monograph on the fishes from freshwater deposits of the basin was published over 80 years ago.
A. Murray
semanticscholar +1 more source