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aqua International Journal 3(3)

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COMPLETE ISSUE

Volume 3, Issue 3 – May 1999

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COMPLETE ISSUE

Volume 3, Issue 3 – May 1999

Ivan Sazima and João Luiz Gasparini: A presumed hybrid of the hogfishes Bodianus pulchellus and Bodianus rufus in the western South Atlantic (Perciformes: Labridae), pp. 89-92

Abstract

A  presumed hybrid between the hogfishes Bodianus pulchellus and B. rufus is described from the coast of Brazil. The putative Bodianus hybrid shows a bled of the colour pattern of the presumed parent species, a common trend among hybrids of several species of reef fishes.

Ronald E. Watson: Two new subgenera of Sicyopus, with a redescription of Sicyopus zosterophorum (Teleostei: Gobioidei: Sicydiinae), pp. 93-104

Abstract

The sicydiine goby genus Sicyopus is divided into three subgenera based largely on dental characteristics found in both jaws. Juxtastiphodon, new subgenus, has conical teeth in both jaws crowded closely together, none recurved and without canines. Subgenus Sicyopus has widely spaced conical teeth in both jaw with most sharply recurved and without canines. Smilosicyopus, new subgenus, is with slightly recurved conical teeth anteriorly in both jaws, laterally needle-like teeth with none recurved, between anterior and lateral teeth, at least one (1-3) canine tooth, well developed imales. Sicyopus zosterophorum, tye species for Sicyopus, is redescribed. Juxtastiphodon, new subgenus, Sicyopus, and Smilosicyopus, new subgenus, most closely resemble Stiphodon in having pelvic disc fused to belly between fifth rays only; in all other sicydiine genera pelvic disc is fused between all five rays.

Jacques Géry: A new anostomid species, Leporinus bleheri n. sp., from the Rio Guaporé-Iténes basin, with comments on some related species (Teleostei: Ostariophys: Characiformes), pp. 105-112

Abstract

A new anostomid species, Leporinus bleheri n. sp., from the Rio Guaporé-Iténez basin, with comments on some related species (Teleostei, Ostariophysi, Characiformes). Topotypical specimens of Leporinus pearsoni Flower, 1940 are redescribed. Leporinus bleheri n. sp., also from the upper Rio Mamoré basin and with a similar colour-pattern and ecology, is described and compared with it, as well as with two other species apparently belonging to the same taxonomic sub-unit.

Ronald E. Watson and Gerald R. Allen: New species of freshwater gobies from Irian Jaya, Indonesia (Teleostei: Gobiidae), pp. 113-118

Abstract

Sicydiine gobies from Irian Jaya, Indonesia, and the region, are listed in the introduction. Three species ae described as new. Lentipes crittersius, new species, differs from congeners in having 19 pectoral rays, scales restricted to posterior half of body with some ctenoid scales on midline, and mid-lateral stripe slightly ventral to septum. Lentipes dimetron, new species, differs from congeners in having 15 pectoral rays, first dorsal spines erect with tips flexing posteriorly only slightly, cyclod scales restricted to posterior half of body, and pore D usually absent. Sicyopus (Smilosicyopus) mystax, new species, is distinguished from other in the genus with canine teeth in both jaws, in having 14 pectoral rays and no sexual dimorphism in jaw length.

Rudie H. Kuiter and Gerald R. Allen: Descriptions of three new wrasses (Teleostei: Perciformes: Labridae: Paracheilinus) from Indonesia and North-western Australia with evidence of possible hybridisation, pp. 119-132

Abstract

Three new species of the labrid genus Paracheilinus are described from Indonesia and offshore reefs of north-western Australia. Paracheilinus cyaneus, new species, is described from two specimens, 48.7-52.2 mm SL, collected at the beggai Islands, Sulawesi. It is distinguished from other members of the genus by a consistently higher number of elongate dorsal filaments and colour pattern, particularly that of displaying males, which have iridescent blue over most of the head, back, and dorsal fin, in addition to bright red dorsal filaments. Paracheilinus flavianalis, new species, is described from 20 specimens, 20.2-53.0 mm SL, collected at Bali Indonesia and Scott-Seringapatam reefs, Western Australia. Males of P. flavianalis have a yellow anal fin, whereas in the closely related P. maccoskeri this fin is deep red on the outer two-thirds and yellow basally, the  two colours being separated by a violet band. Males of P. flavianalis also different in having a distinctive dark red mark at the middle of the outer part of the dorsal fin, which encompasses the first three soft dorsal rays (at least one of these forms a long filament). Paracheilinus togeanensis, new species, is described from a single specimen, 47.8 mm SL, collected at the Togean Islands, northern Sulawesi. It is distinguished by colour pattern, a lack of dorsal fin filaments, a lunate caudal fin, and rounded posterior profile of the dorsal fin.

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Dimensions 26.6 x 20.3 x 0.3 cm
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