Two new dwarfgobies (Gobiidae) from southern Japan: Eviota amamiko and Eviota perspicilla

  • Kyoji FujiwaraEmail author
  • Toshiyuki Suzuki
  • Hiroyuki Motomura
Full Paper


Two new dwarfgobies, Eviota amamiko and Eviota perspicilla, are described from southern Japan, based on 3 (Ryukyu Islands) and 22 (Satsuma Peninsula and Koshiki, Osumi, and Amami islands) specimens, respectively. Eviota amamiko, belonging to a group lacking cephalic sensory-canal pores, can be distinguished from all other members of Eviota in having the following combination of characters: dorsal/anal fin-ray formula 8/8; 14 or 15 pectoral-fin rays; 5th pelvic-fin ray absent or rudimentary; urogenital papillae of both sexes not fimbriate; five dark brown irregularly shaped (usually X- or Y-like) bars on body; two narrow diagonal red lines below eye; anal-fin base with two reddish-brown spots; no dark spots on caudal peduncle over preural centrum; and caudal-fin base without crescentic marks. Although similar to Eviota japonica Jewett and Lachner 1983, Eviota prasina (Klunzinger 1871), and Eviota queenslandica Whitley 1932, E. perspicilla is clearly distinct from all other congeners in having the following combination of characters: cephalic sensory-canal pore system pattern 2 [lacking only pore H (IT)]; dorsal/anal fin-ray formula 9/8; some pectoral-fin rays branched; dorsal-fin spine not filamentous in both sexes; pelvic fin very long, its tip usually beyond anal-fin origin when appressed [length 26.7–38.9 (mean 34.7) % of standard length]; urogenital papillae of both sexes not fimbriate; five dark postanal bars (spots in preserved specimens) and two dark postocular spots present; two dark spots on pectoral-fin base; no dark spots under pectoral-fin base; distinct dark caudal-peduncle spot over preural centrum; and spinous dorsal fin blackish overall, with two small translucent white circular spots on its base.


Description Ryukyu Islands Eviota japonica Eviota prasina Eviota queenslandica 



We are deeply grateful to A. Hay (AMS), H. Senou (KPM), G. Shinohara and M. Nakae (NSMT), and S. Matsui (OMNH) for providing opportunities to examine specimens; K. Yano (Diving Service Yano) for providing an underwater photograph; R. Winterbottom (ROM) for providing literature; and Y. Haraguchi (KAUM) and other volunteers and students of KAUM for curatorial assistance. G. Hardy (Ngunguru, New Zealand) read the manuscript and provided help with English. This study was supported in part by a Grant-in-Aid from the Japan Society for the Promotion of Science for JSPS Fellows (DC1: 19J21103); JSPS KAKENHI Grant Numbers JP19770067, JP26241027, JP24370041, JP23580259, and JP26450265; the JSPS Core-to-Core Program: B Asia-Africa Science Platforms; the “Biological Properties of Biodiversity Hotspots in Japan” project of the National Museum of Nature and Science, Tsukuba, Japan; “Establishment of Research and Education Network on Biodiversity and Its Conservation in the Satsunan Islands” project of Kagoshima University adopted by the Ministry of Education, Culture, Sports, Science and Technology, Japan; and the “Island Research” project of Kagoshima University.


  1. Akihito, Sakamoto K, Iwata A, Ikeda Y (2013) Gobioidei. In: Nakabo T (ed) Fishes of Japan with pictorial keys to the species. 3rd edition. Tokai University Press, Hadano, pp 1347–1608, 2109–2211Google Scholar
  2. Greenfield DW (2017) An overview of the dwarfgobies, the second most speciose coral-reef fish genus (Teleostei: Gobiidae: Eviota). J Ocean Sci Found 29:32–54Google Scholar
  3. Greenfield DW, Randall JE (2016) A review of the dwarfgobies of Fiji, including descriptions of five new species (Teleostei: Gobiidae: Eviota). J Ocean Sci Found 20:25–75Google Scholar
  4. Greenfield DW, Suzuki T (2012) Eviota atriventris, a new goby previously misidentified as Eviota pellucida Larson (Teleostei: Gobiidae). Zootaxa 3197:55–62CrossRefGoogle Scholar
  5. Greenfield DW, Suzuki T, Shibukawa K (2014a) Two new dwarfgobies of the genus Eviota from the Ryukyu Islands, Japan (Teleostei: Gobiidae). Zootaxa 3774:481–488CrossRefGoogle Scholar
  6. Greenfield DW, Winterbottom R (2012) Two new dwarfgobies from the southwestern Pacific Ocean (Teleostei: Gobiidae; Eviota). Zootaxa 3572:33–42CrossRefGoogle Scholar
  7. Greenfield DW, Winterbottom R (2016a) A key to the dwarfgoby species (Teleostei: Gobiidae: Eviota) described between 1871 and 2016. J Ocean Sci Found 24:35–90Google Scholar
  8. Greenfield DW, Winterbottom R (2016b) Three new dwarfgobies from the western Pacific Ocean (Teleostei: Gobiidae: Eviota). J Ocean Sci Found 22:28–40Google Scholar
  9. Greenfield DW, Winterbottom R, Suzuki T (2014b) Eviota occasa, a new species of dwarfgoby from Palau and the Ryukyu Islands, Japan (Teleostei: Gobiidae). J Ocean Sci Found 10:11–19Google Scholar
  10. Hagiwara K (2018) Gobiidae. In: Motomura H, Hagiwara K, Senou H, Nakae M (eds) Identification guide to fishes of the Amami Islands, Japan. Kagoshima University Museum, Kagoshima, Yokosuka City Museum, Yokosuka, Kanagawa Prefectural Museum of National History, Odawara, and National Museum of Nature and Science, Tukuba, pp 331–369Google Scholar
  11. Hagiwara K (2019) Gobiidae. In: Motomura H, Hagiwara K, Senou H, Nakae M (eds) Identification guide to fishes of the Amami Islands in the Ryukyu Archipelago, Japan. The Minaminippon Shimbun Kaihatsu Center, Kagoshima, pp 335–374Google Scholar
  12. Jenkins OP (1903) Report on collections of fishes made in the Hawaiian Islands, with descriptions of new species. Bull US Fish Comm 22:417–511Google Scholar
  13. Jewett SL, Lachner EA (1983) Seven new species of the Indo-Pacific genus Eviota (Pisces: Gobiidae). Proc Biol Soc Wash 96:780–806Google Scholar
  14. Jordan DS, Seale A (1906) The fishes of Samoa. Description of the species found in the archipelago, with a provisional check-list of the fishes of Oceania. Bull Bur Fish 25:173–455Google Scholar
  15. Klunzinger CB (1871) Synopsis der Fische des Rothen Meeres. II. Theil. Verh K-K Zool-Bot Ges Wien 21:441–688Google Scholar
  16. Lachner EA, Karnella SJ (1980) Fishes of the Indo-Pacific genus Eviota with descriptions of eight new species (Teleostei: Gobiidae). Smithson Contrib Zool 315:1–127CrossRefGoogle Scholar
  17. Motomura H, Harazaki S (2017) Annotated checklist of marine and freshwater fishes of Yaku-shima island in the Osumi Islands, Kagoshima, southern Japan, with 129 new records. Bull Kagoshima Univ Mus 9:1–183Google Scholar
  18. Motomura H, Ishikawa S (2013) Fish collection building and procedures manual. English edition. The Kagoshima University Museum, Kagoshima and Research Institute for Humanity and Nature, KyotoGoogle Scholar
  19. Motomura H, Kuriiwa K, Katayama E, Senou H, Ogihara G, Meguro M, Matsunuma M, Takata Y, Yoshida T, Yamashita M, Kimura S, Endo H, Murase A, Iwatsuki Y, Sakurai Y, Harazaki S, Hidaka K, Izumi H, Matsuura K (2010) Annotated checklist of marine and estuarine fishes of Yaku-shima Island, Kagoshima, southern Japan. In: Motomura H, Matsuura K (eds.) Fishes of Yaku-shima Island – A World Heritage island in the Osumi Group, Kagoshima Prefecture, southern Japan. National Museum of Nature and Science, Tokyo, pp. 65–248Google Scholar
  20. Sabaj MH (2016) Standard symbolic codes for institutional resource collections in Herpetology and Ichthyology: an online reference. Version 6.5 (16 August 2016). American Society of Ichthyologists and Herpetologists, Washington, DC. Accessed 11 February 2019.
  21. Saruwatari T, Lopez JA, Pietsch TW (1997) Cyanine Blue: a versatile and harmless stain for specimen observation. Copeia 1997:840–841CrossRefGoogle Scholar
  22. Sunobe T (1988) A new gobiid fish of the genus Eviota from Cape Sata, Japan. Jpn J Ichthyol 35:278–282CrossRefGoogle Scholar
  23. Suzuki T, Greenfield DW (2014) Two new dwarfgobies from the Ryukyu Islands, Japan: Eviota shibukawai and Eviota filamentosa (Teleostei: Gobiidae). J Ocean Sci Found 11:32–39Google Scholar
  24. Suzuki T, Greenfield DW, Motomura H (2015a) Two new dwarfgobies (Teleostei: Gobiidae) from the Ryukyu Islands, Japan: Eviota flavipinnata and Eviota rubrimaculata. Zootaxa 4007:399–408CrossRefGoogle Scholar
  25. Suzuki T, Shibukawa K, Chen IS, Yano K, Chiba SN, Uchino K, Takase W, Senou H (2015b) First records of eight gobioid fishes (Perciformes, Gobioidei) from the Ryukyu Islands, Japan. Fauna Ryukyuana 18:9–38Google Scholar
  26. Suzuki T, Shibukawa K, Yano K, Senou H (2004) A Photograph Guide to the Gobioid Fishes of Japan. Heibonsha, TokyoGoogle Scholar
  27. Tornabene L, Ahmadia GN, Williams JT (2013) Four new species of dwarfgobies (Teleostei: Gobiinae: Eviota) from the Austral, Gambier, Marquesas and Society Archipelagos, French Polynesia. Syst Biodivers 11:363–380CrossRefGoogle Scholar
  28. Wessel P, Smith WHF (1996) A global self-consistent, hierarchical, high-resolution shoreline database. J Geophys Res Solid Earth 101 (B4): 8741–8743CrossRefGoogle Scholar
  29. Whitley GP (1932) Fishes. Great Barrier Reef Expedition, 1928-29. Sci Rep 4:267–316Google Scholar
  30. Winterbottom R (1989) A revision of the Trimmatom nanus species complex (Pisces, Gobiidae), with descriptions of three new species and redefinition of Trimmatom. Can J Zool 67:2403–2410CrossRefGoogle Scholar
  31. Winterbottom R, Emery AR (1981) A new genus and two new species of gobiid fishes (Perciformes) from the Chagos Archipelago, central Indian Ocean. Environ Biol Fish 6:139–149CrossRefGoogle Scholar
  32. Winterbottom R, Hoese DF (1988) A new genus and four new species of fishes from the Indo-West Pacific (Pisces; Perciformes; Gobiidae), with comments on relationships. Roy Ont Mus Life Sci Occas Pap 37:1–17Google Scholar

Copyright information

© The Ichthyological Society of Japan 2019

Authors and Affiliations

  1. 1.The United Graduate School of Agricultural SciencesKagoshima UniversityKagoshimaJapan
  2. 2.Osaka Museum of Natural HistoryOsakaJapan
  3. 3.The Kagoshima University MuseumKagoshimaJapan

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