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aqua International Journal 9(3)



Volume 9, Issue 3 – March 2005


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Volume 9, Issue 3 – March 2005

Valdesalici, Stefano and Rudolf H. Wildekamp: A new species of the genus Nothobranchius (Cyprinodontiformes: Nothobranchiidae) from the Luapula River basin, Zambia, pp. 89-96


Specimens of three different populations of a Nothobranchius species, collected from ephemeral pools in the Luapula/Bangweulu catchment in Zambia, are considered to be one species on the basis of the coloration of males. The new species has been compared with the Nothobranchius species now known to exist in the same river system. It differs in some morphological features from the other species of Nothobranchius in the same river system and has a distinct colour pattern. Information on its present known distribution is given, as well as on its relationship to the other Nothobranchius species in Zambia and in the adjacent region of the Democratic Republic of Congo.

Sazima, Cristina, Bolando, Roberta Martini, Krajewsk, João Paulo and Ivan Sazima: The Noronha wrasse: a “jack-of-all-trades” follower, pp. 97-108


Following association between reef fishes involves opportunistic predators following one or more foraging nuclear species (mainly bottom-diggers). The followers benefit from food uncovered or flushed out when reef fishes disturb the bottom. At the Fernando de Noronha Archipelago, south-west Atlantic, we recorded the plankton eater, benthic invertebrate picker, and cleaner wrasse Thalassoma noronhanum, commonly known as the Noronha wrasse, acting as a very flexible feeder – a kind of “jack-of-all-trades” – while following reef fishes. The Noronha wrasse associated with 15 reef fish species, feeding on drifting particles made available as the latter foraged on the bottom. The wrasse displayed four types of feeding behaviour while following foraging reef fishes: 1) eating particles stirred up; 2) eating particles expelled by the foraging fish; 3) eating faecal particles; 4) cleaning fish. The wrasse was commonly recorded following the parrotfishes Sparisoma frondosum, S. axillare, S. amplum, and the grunt Haemulon parra. The variable feeding behaviour here recorded for T. noronhanum while following reef fishes seems rare among follower fish species. Nevertheless, some wrasse species have very opportunistic foraging habits as well, which render them likely candidates to display flexible feeding behaviour.

Winterbottom, Richard,  Iwata, Akihisa and Toshikazu Kozawa: Vanderhorstia nannai, a new species of burrow-associated goby from Palau and the Philippines (Pisces: Gobiidae), pp. 109-114


A new species of the shrimp-associated gobiid genus Vanderhorstia, V. nannai, is described from four specimens collected in Palau, and from 15 aquarium specimens reputedly from the Philippines. The presence of this species in the latter area is supported by an image of the live fish photographed in situ in the Philippines available on the internet. It is distinguished from its congeners by the elongate 5th and 9th branched caudal fin rays; 16-18 pectoral fin rays; 41-45 lateral scale rows; no scales in the predorsal midline; coloration pale off-white background with six prominent yellow orange spots haloed with blue on the midlateral surface of the body and smaller yellow-orange spots and blue spots and streaks on the head; a single papilla on row cp’; an uninterrupted row b on the cheek; and a total of two to four papillae in a transverse row across the chin (row f).

John E. Randall, Robert F. Myers, Michael N. Trevor, Scott R. and Jeanette L. Johnson, Satoshi Yoshii and Brian D. Greene: Ninety-one new records of fishes from the Marshall Islands, pp. 115-132


The following species of fishes are reported as first records for the Marshall Islands (represented either by specimens or clearly identifiable photographs or video images): Rhincodon typus, Stegostoma fasciatum, Himantura fai, Pastinachus sephen, Ophichthus bonaparti, Gymnothorax breedeni, Myripristis chryseres, Choeroichthys brachysoma, Pontinus rhodochrous, Aethaloperca rogaa, Aulacocephalis temminckii, Cephalopholis aurantia, C. igarashiensis, C. polleni, Epinephelus chlorostigma, E. miliaris, E. retouti, Plectranthias kamii, Plectropomus leopardus, Saloptia powelli, Variola albimarginata, Neocirrhites armatus, Picti-chromis porphyreus, Siphamia versicolor, Remora osteochir, Carangoides coeruleopinnatus, C. gymno-stethus, Caranx papuensis, Decapterus tabl, Megalaspis cordyla, Seriola rivoliana, Uraspis helvola, Aphareus rutilans, Lutjanus ehrenbergii, L. rufolineatus, Macolor macularis, Paracaesio sordida, P. xanthura, Pristipomoides auricilla, P. fllamentosus, P. zonatus, Randall-ichthys fllamentosus, Caesio lunaris, Pterocaesio trilineata, Lethrinus rubrioperculatus, Wattsia mossambica, Nemipterus zysron, Parupeneus indicus, Upeneus vittatus, Chaetodon burgessi, Hemitaurichthys thompsoni, Heniochus singularis, Apolemichthys griffisi, A. xanthopunctatus, Pomacentrus nagasakiensis, Bodianus bimaculatus, B. mesothorax, Cirrhilabrus earlei, Hologymnosus doliatus, Bolbometopon muricatum, Chlorurus japanensis, Scarus fuscocaudalis, Amblyeleotris arcupinna, A. gymnocephala, A. periophthalma, A. randalli, A. yanoi, Bryaninops natans, B. yongei, Coryphopterus pallidus, Cryptocentrus caeruleomaculatus, C. cyanotaenia, Discordipinna griessingeri, Eviota cometa, E. punctulata, E. sigillata, Mahidolia mystacina, Paragobiodon lacunicolus, Psilogobius mainlandi, Stonogobiops yasha, Trimma tevegae, Gunnellichthys viridescens, Nemateleotris decora, Siganus spinus, Acanthurus auranticavus, Naso brachycentron, N. thynnoides, Rastrelliger kanagurta, Aluterus monoceros, Lactoria cornuta, and Ostracion solorensis. Eight sight records are also listed, the occurrence of which should be confirmed with specimens or photographs.

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Dimensions 26.6 × 20.3 × 0.3 cm
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