Isaäc J. H. Isbrücker

Isaäc J. H. Isbrücker
University of Amsterdam | UVA · Zoological Museum, Department of Ichthyology

PhD

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133
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Publications

Publications (133)
Article
The work now published for the first time was completed early October 1981. It was produced as a thesis, consisting of three parts, see the references on this page. Part 1 was published in 1980, Parts 2 and 3 were 15 times photocopied and bound, eleven copies of each were deposited in the library of the Laboratoire de Zoologie approfondie, Universi...
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The taxonomy of the common guppy, Poecilia reticulata Peters, 1859, is reviewed and the closely related Campoma guppy, P. wingei n. sp., is described. Formerly, the common guppy was not judged to be closely related to any other species of Poecilia, but the new species is the second species to be allocated in the subgenus Acanthophacelus Eigenmann,...
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A rare threadfin, Polydactylus macrophthalmus (Bleeker, 1858), having long been included in the genus Polynemus, is redescribed on the basis of 9 specimens and a lectotype designated. Polydactylus macrophthalmus is characterized by the following combination of characters: 7 pectoral filaments, upper 3 filaments extending beyond posterior margin of...
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Rivulus torrenticola n. sp. is described from small tributaries of the Kamarang River, which itself is a left bank tributary of the Mazaruni River in Guyana. R. torrenticola is a small, non-annuals species. Males are distinguished to other Rivulus spp. by their long dorsal, anal and pelvic fins, by their truncate caudal fin and by their two longitu...
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Corydoras breei n. sp., was previously known and misidentified as C. osteocarus. It is described and illustrated from the Kabale-bo River, tributary to the Corantijn River in Surinam. Its relationships are discussed.
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Lithoxus stocki, a catfish species new to science from the Maroni River drainage in French Guiana and Surinam is described. A lectotype is designated for Lithoxus bovallii. Morphometric and meristic characters of the six species of the genus are provided. Paralithoxus, originally proposed as a subgenus of Lithoxus , is relegated to the synonymy of...
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The mailed catfish Planiloricaria cryptodon (Isbrücker, 1971) was hitherto only known from the holotype from Río Ucayali, Peru. New material from Rio Purus (Est. Acre, Brazil) and from Río Mamoré (Prov. Beni, Bolivia) is described and compared with the holotype. One of the new specimens is illustrated. A key to the genera of the subtribe Planiloric...
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Lasiancistrus scolymus n. sp. is described and illustrated, based upon the holotype from Rio
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Pyxiloricaria menezesi n. gen., n. sp., is described and illustrated from Rio Miranda (Est. Mato Grosso do Sul) and from Rio Cuiabá (Est. Mato Grosso), Brazil. It is assigned to the subtribe Planiloricariina of the tribe Loricariini, subfamily Loricariinae. A comparison is made with sympatric Pseudohemiodon cf. laticeps (Regan, 1904).
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This paper contains records and/or descriptions of twelve species of the Callichthyid catfish genus Corydoras Lacepède, 1803, including two new species, from Colombian rivers, Rio Amazonas excluded: Corydoras trilineatus Cope, 1872, C.
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Examination of recently collected material of the mailed catfish genus Lasiancistrus Regan, 1904, from French Guiana and Surinam revealed L. niger (Norman, 1926), and two new species: L. brevispinis and L. longispinis . The three species are described and figured. Lasiancistrus is compared with 13 other genera, forming the tribe Ancistrini of the s...
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Dentectus barbarmatus, a new genus and species of mailed catfish of the subfamily Loricariinae, tribe Loricariini, is described from tributaries of the northern margin of the Orinoco River in Venezuela. Morphometric and meristic data of several specimens are presented and illustrations are given. The relationships of the new genus with other genera...
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A large number of previously unrecorded specimens of mailed catfishes of the genus Metaloricaria Isbrücker, 1975 (Loricariinae, tribe Harttiini, subtribe Metaloricariina) is compared with the known specimens from French Guiana and Surinam. This results in the recognition of two subspecies, viz., M. paucidens paucidens Isbrücker, 1975, from the rive...
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A redescription and figures of Corydoras nattereri Steindachner, 1877, are given together with a description and figures of a new species, Corydoras prionotos, sympatric with Corydoras nattereri, with comparable dimensions and a similar colour pattern. A total of 1066 specimens were examined, including primary type-material of Corydoras juquiaae Vo...

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