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Zootaxa roundup
August 7, 2014
2:12 pm
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Matt
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Zootaxa 3846(2)

Pethia longicauda, a new species of barb (Teleostei: Cyprinidae) from the northern Western Ghats, India

Pethia longicauda, a new cyprinid fish, is described from Hiranyakeshi River, Krishna drainage, Maharashtra, India. It
can be distinguished from congeners based on a combination of characters including: a long caudal peduncle, incomplete
lateral line, absence of barbels, upper lip thick and fleshy, distinct lateral fold on snout, 22–24 scales in lateral series, 5–6
lateral-line pored scales, nine predorsal scales, 9–10 prepelvic scales, 15–17 preanal scales, ½3/1/3½ transverse scales,
11–15 pairs of serrae on the distal half of the last unbranched dorsal-fin ray, 11–13 branched pectoral fin rays, 4+26 total
vertebrae, 4+5 predorsal vertebrae, 4+13 abdominal and 13 caudal vertebrae, body iridescent silver in color with a black
humeral spot, two black blotches on caudal peduncle and dorsal fin usually without any color bands or blotches but in
breeding males with two rows of minute, indistinct black spots.

Zootaxa 3847(1) - OPEN ACCESS

Review of the species of the genus Serrapinnus Malabarba, 1998 (Teleostei: Characidae: Cheirodontinae) from the rio Tocantins-Araguaia basin, with description of three new species

Species of the genus Serrapinnus from the rio Tocantins-Araguaia basin are revised and three new species are described.
Serrapinnus aster new species is diagnosed by the presence of scimitar-shaped ventral procurrent caudal-fin rays of mature
males forming a semicircle and by the presence of 7–9 cusps on the premaxillary teeth; S. lucindai new species is
distinguished from its congeners by the presence of a higher number of ventral procurrent caudal-fin rays (17 to 19); and
S. tocantinensis new species differs from the remaining species of the genus by the elongation of the unbranched dorsal
and pelvic-fin rays into filaments in mature males. Serrapinnus sterbai is recognized as broadly distributed in the Tocantins-
Araguaia basin and is redescribed based on specimens from across its entire distribution. A key for the cheirodontines
occurring in the Atlantic drainages of northeastern Brazil, from the rio Tocantins-Araguaia to the rio Paraguaçú is provided.

Zootaxa 3847(2)

Re-description of the gudgeon species Saurogobio gracilicaudatus Yao & Yang in Luo, Yue & Chen, 1977 (Teleostei: Cyprinidae) from the Chang-Jiang basin, South China, with a note on its generic classification

Saurogobio gracilicaudatus, originally described from the middle Yangtze River (Chang-Jiang in Chinese) basin at
Yichang and Guanghua (now Laohekou), Hubei Province, South China, is here re-described, with particular concern for
oromandibular structures in the mouth. It is uniquely distinguishable from all other species of Saurogobio in having a rostral
cap with a slightly crenulated median portion, lips covered with brush-like, conical papillae, and a lower lip with a
small, smooth and protruded central pad anteriorly free and posteriorly confluent with lateral lobes. The generic classification
of this species is also discussed on the basis of oromandibular structures, which are of taxonomic importance in
generic classification of gudgeons.

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