aqua International Journal 12(3)
Volume 12, Issue 3 – 10 July 2007
Volume 12, Issue 3 – 10 July 2007
John E. Randall: Descriptions of four new shrimpgobies of the genus Vanderhorstia from the western Pacific, pp. 89-100
The following four new species of the Indo-Pacific gobiid fish genus Vanderhorstia are described and illustrated in color: V. attenuata from the Solomon Islands, with 11 dorsal and anal soft rays, 39 scales in longitudinal series on body, 15 median predorsal scales (none in remaining three species), and a caudal fin with the middle five rays very prolonged and tapering (more uniformly pointed in remaining species); V. auronotata from the Molucca Islands, with 14 dorsal soft rays, 15 anal soft rays, and about 55 scales on body; V. belloides from Papua New Guinea with 16 dorsal soft rays, 17 anal soft rays, and 66-68 scales; and V. dorsomacula from Papua New Guinea with 17 dorsal soft rays, 18 anal soft rays, 78 scales, and a slender body (depth 6.6 in SL). One undescribed species of the genus is illustrated from a specimen that is now missing. The total number of species of Vanderhorstia is now 17; at least 17 more remain to be described.
Gerald R. Allen: Hoplolatilus erdmanni, a new species of sand tilefish (Pisces: Malacanthidae) from western New Guinea, pp. 101-106
Hoplolatilus erdmanni is described on the basis of two specimens, 129.8-137.2 mm standard length, collected in the vicinity of Triton Bay, Irian Jaya Barat Province (western New Guinea), Indonesia. Approximately 15 individuals were observed on gentle rubble slopes at depths of 42 to 60 m. The fish were seen solitarily, in pairs, or in trios generally in close proximity to large rubble mounds, which they construct. It is most similar to H. fronticinctus, a wide-ranging Indo-west and central Pacific species. The new taxon differs in having fewer lateral-line scales as well as several colour pattern features that include about 15 to 17 reddish-brown bars on the side, an obliquely angled, blue-edged yellow-orange stripe behind the eye, a thin blue stripe across the operculum, a neon blue region across the entire caudal peduncle, and vivid red central caudal fin-rays.
Jacques Géry: Rediscovery of the rare curimatid fish Curimatopsis microlepis Eigenmann & Eigenmann, 1889 (Teleostei: Characiformes) in the Rio Purus basin, Brazil, with a note on some Amazonian localities of the Thayer Expedition to Brazil in 1865 and 1866, pp. 107-122
The rare and interesting curimatid fish Curimatopsis microlepis Eigenmann & Eigenmann, 1889 (Teleostei: Characiformes), the generic attribution of which is provisional, has been rediscovered recently in the Rio Purus region, Brazil by Heiko Bleher. The recent specimens are described; characteristics such as the squamation and the colour, until now poorly known or not known at all, are given. Its type locality, Jatuarana, as well as some other localities of the Thayer Expedition in Brazil in 1865 and 1866, are discussed and corrected. Faunal lists of these stations and a study of the faunal similarity are reported.
Wilson J. E. M. Costa: Rivulus lazzarotoi n. sp. (Teleostei: Cyprinodontiformes: Rivulidae), a new killifish from the Jurumirim River basin, southeastern Brazil, pp. 123-128
Rivulus lazzarotoi n. sp., a member of the R. santensis species group from the Jurumirim River basin, southeastern Brazil, is described. It is hypothesized to be closely related to R. simplicis as both uniquely have numerous neuromasts in the infraorbital series. Rivulus lazzarotoi differs from R. simplicis in having its dorsal-fin origin posteriorly inserted and a longer pectoral fin in males. It is distinguished from all species of the R. santensis group in possessing minute pelvic fins, a unique colour pattern on the anal fin in males and a large and round caudal spot in females. Monophyly of the R. santensis species group is further supported by a derived arrangement of infraorbital neuromasts.
Wilson J. E. M. Costa, Rogério Suzart and Dalton T. B. Nielsen: Cynolebias paraguassuensis n. sp. (Teleostei: Cyprinodontiformes: Rivulidae), a new seasonal killifish from the Brazilian Caatinga, Paraguaçu River basin, pp. 129-132
Cynolebias paraguassuensis n. sp., a median sized species from the Paraguaçu River basin, northeastern Brazil, is described, constituting the first record of a rivulid fish for that basin. It is similar to C. itapicuruensis and C. vazabarrisensis in having dentary teeth strongly bowed. It is distinguished from C. itapicuruensis and C. vazabarrisensis in possessing a longer pectoral fin in males and light blue dots over the entire anal fin in males.
|Dimensions||26.6 × 20.3 × 0.3 cm|
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