Ichthyological Research

, Volume 64, Issue 1, pp 45–53 | Cite as

Nemoossis, a new genus for the eastern Atlantic long-fin bonefish Pterothrissus belloci Cadenat 1937 and a redescription of P. gissu Hilgendorf 1877 from the northwestern Pacific

  • Koichi Hidaka
  • Youichi Tsukamoto
  • Yukio Iwatsuki
Full Paper


The new generic name Nemoossis is proposed for the albulid species Pterothrissus belloci Cadenat 1937, a species endemic to the eastern Atlantic Ocean. Nemoossis differs from other genera in the family Albulidae as follows: longer dorsal-fin base, absence of supraneural bones, dorsal-fin rays [51–57 (mode 52)], vertebrae [total number 88–92 (91)], pored lateral-line scales [79–89 (84)], pre-dorsal-fin scale rows [3–8 (8)], head length [24–32 % (mean 30 %) of SL], pectoral-fin length [16–21 % (19 %) of SL], pre-dorsal-fin length [27–34 % (30 %) of SL], dorsal-fin base length [53–64 % (60 %) of SL], postorbital length [13–16 % (14 %) of SL], and upper caudal-fin length [18–31 % (24 %) of SL]. MNHN 1938-0002, 192 mm SL, is designated as a lectotype for P. belloci, and Bathythrissa dorsalis Günther 1877 is shown to be a junior synonym of P. gissu.


Albulidae Redescription Pterothrissus New genus Nemoossis 



We greatly appreciate the specimen loans from the following persons and institutions: K-T. Shao (ASIZP); J. Maclaine (BMNH); H. Endo (BSKU); T. Nakabo and Y. Kai (FAKU); S. Kimura (FRLM); M. Yabe, H. Imamura, and T. Kawai (HUMZ); C. Ferrara, R. Causse, Z. Gabsi, P. Pruvost, and G. Duhamel (MNHN); G. Shinohara and K. Matsuura (NSMT); K. Hatooka (OMNH); B. Mackenzie, R. Bills, K. Dubula, U. Lwana, E. Heemstra, M. Mwale, V. B. Kongobe, V. Hanisi, W. Holleman, M. E. Anderson, P. C. Heemstra, and P. Skelton (SAIAB); M. Bougaardt and L. J. V. Compagno (SAM); and P. Bartsch and H.-J. Paepke (ZMB). K. E. Carpenter (ODU), organizer of the 2004 FAO workshop (Tenerife, Canary Is., Spain), with the co-operation of the Spanish Government, also provided examples of Nemoossis belloci for which we were very grateful. G. S. Hardy, Ngunguru, New Zealand, read the initial manuscript and offered helpful comments. This study was financially supported in part by the Sasakawa Scientific Research Grant from the Japan Science Society (No. 15-258) and the Ito Grant for Ichthyology, Fujiwara Natural History Foundation, awarded to the first author.


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Copyright information

© The Ichthyological Society of Japan 2016

Authors and Affiliations

  • Koichi Hidaka
    • 1
  • Youichi Tsukamoto
    • 2
  • Yukio Iwatsuki
    • 3
  1. 1.Marine Fisheries Research and Development Center (JAMARC)Fisheries Research AgencyYokohamaJapan
  2. 2.Hokkaido National Fisheries Research InstituteFisheries Research AgencySapporoJapan
  3. 3.Department of Marine Biology and Environmental SciencesUniversity of MiyazakiMiyazakiJapan

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