Abstract
Species of pseudoplesiopine and pseudochromine fishes from the Socotra Archipelago are reported based mainly on collections made in 1999 and 2000. Two species of the pseudoplesiopine genus Chlidichthys Smith are recorded: C. bibulus (Smith) and C. cacatuoides Gill and Edwards. Seven species of the pseudochromine genus Pseudochromis Rüppell are recorded: P. chrysospilus sp. nov., P. leucorhynchus Lubbock, P. linda Randall and Stanaland, P. nigrovittatus Boulenger, P. sankeyi Lubbock, P. socotraensis sp. nov. and an undetermined species (allied to P. punctatus Kotthaus). Pseudochromis chrysospilus belongs to a newly diagnosed P. caudalis-complex; it differs from other members of the complex in various meristic and coloration details. Pseudochromis socotraensis belongs to a newly diagnosed P. dutoiti-complex; it differs from other members of the complex in adult size, various meristic characters and live coloration. Based on both the collection records and additional visual records made in 1999 and 2000 the archipelagic distribution ranges of each species and the biotopes inhabited by them are described. Two additional species are tentatively reported from the Socotra Archipelago on the basis of sight records: P. dixurus Lubbock and P. omanensis Gill and Mee.
References
Arnoult, J., Bauchot‑Boutin, M.L. & Roux‑Estève, R. (1958) 1. Les poissons de l'ile Aldabra. Campagne Océanographique de la Calypso (Mai‑Juin 1954). Annales de l'Institut Océanographique, Monaco, 34, 47–90.
Boulenger, G.A. (1897) Descriptions of new fishes from the Mekran Coast, Persia. Annals and Magazine of Natural History, series 6, 20, 420–422.
Boulenger, G.A. (1898) Descriptions of two new fishes from the coast of Sind. Annals and Magazine of Natural History, series 7, 2, 133–134.
DeVantier, L., De'Ath, G., Klaus, R., Al-Moghrabi, S., Abdulaziz, M., Reinicke, G. & Cheung, C. (2004). Reef-building corals and coral communities of the Socotra Archipelago, a zoogeographic 'crossroads' in the Arabian Sea. Fauna of Arabia, 20, 117–168.
Forsskål, P.S. (1775) Descriptiones animalium avium, amphibiorum, piscium, insectorum, vermium; quae in itinere orientali observavit... Post mortem auctoris edidit Carsten Niebuhr. Hauniae. Descriptiones animalium quae in itinere ad Maris Australis terras per annos 1772 1773 et 1774 suscepto, ..., 1–20 + i–xxxiv + 1–164, map.
Gill, A.C. (2004) Revision of the Indo-Pacific dottyback fish subfamily Pseudochrominae (Perciformes: Pseudochromidae). Smithiana Monograph, 1, ii + 1–214, pls 1–12.
Gill, A.C. & Edwards, A.J. (2004) Revision of the Indian Ocean dottyback fish genera Chlidichthys and Pectinochromis (Perciformes: Pseudochromidae: Pseudoplesiopinae). Smithiana, Ichthyological Bulletin, 3, 1–47.
Gill, A.C. & Mee, J.K.L. (1993) Notes on dottyback fishes of the genus Pseudochromis of Oman, with description of a new species (Perciformes: Pseudochromidae). Revue française d'Aquariologie Herpétologie, 20, 53–60.
Gill, A.C. & Randall, J.E. (1994) Chlidichthys cacatuoides, a new species of pseudoplesiopine dottyback from Oman, with a diagnosis of the genus Chlidichthys Smith, and new record of Pseudochromis punctatus Kotthaus from Oman (Teleostei: Perciformes: Pseudochromidae). Revue française d'Aquariologie Herpétologie, 21, 11–18.
Gill, A.C. & Zajonz, U. (2003) Halidesmus socotraensis new species and Haliophis guttatus (Forsskål), new records of congrogadine fishes from the Socotra Archipelago (Perciformes: Pseudochromidae). Proceedings of the Biological Society of Washington, 116, 53–61.
Golani, D. & Bogorodski, S.V. (2010) The fishes of the Red Sea—reappraisal and updated checklist. Zootaxa, 2463, 1–135.
Günther, A. (1872) Report on several collections of fishes recently obtained for the British Museum. Proceedings of the General Meetings for Scientific Business of the Zoological Society of London, 1871, 652–675, pls 53–70.
Kemp, J.M. (1998) Zoogeography of the coral reef fishes of the Socotra Archipelago. Journal of Biogeography, 25, 919–933.
Klaus, R, West, F. & Turner, J. (2002, unpubl. report) The marine biotopes of the Socotra Island Group. In: Marine Habitat, Biodiversity and Fisheries Surveys and Management, Report of Phase III (UNOPS YEM/96/G32, C-972248). Apel, M., Krupp, F. & Hariri, K.I. (Eds.), 11–168. Senckenberg Research Institute; Frankfurt a.M., Germany.
Klaus, R. & Turner, J. (2004) The marine biotopes of the Socotra Island Group. Fauna of Arabia, 20, 45–115.
Kotthaus, A. (1970) Fische des Indischen Ozeans. Ergebnisse der ichthyologischen Untersuchungen während der Expedition des Forschungsschiffes "Meteor" in den Indischen Ozean. Oktober 1964 bis Mai 1965. A. Systematischer Teil, VII. Percomorpha (1). "Meteor" Forschungsergebnisse, Serie D, 6, 43–55.
Leviton, A.E., Gibbs, R.H. Jr, Heal, E. & Dawson, C.E. (1985) Standards in herpetology and ichthyology: Part 1. Standard symbolic codes for institutional resource collections in herpetology and ichthyology, Copeia, 1985, 802–832.
Lubbock, R. (1975) Fishes of the family Pseudochromidae (Perciformes) in the northwest Indian Ocean and Red Sea. Journal of Zoology, London, 176, 115–157.
Lubbock, R. (1977) Fishes of the family Pseudochromidae (Perciformes) in the Western Indian Ocean. Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology, 35, 1–21, pls 1–5.
Nielsen, J.G. (1961) On some fishes from Karachi and Bombay with description of a new genus and species of the Haliophidae. Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening, Kjøbenhavn, 123, 249–256.
Parenti, L.R. & Ebach, M.E. (2009) Comparative Biogeography. University of California Press, Berkeley, 295 pp.
Randall, J.E. & Stanaland, B.E. (1989) A new dottyback of the genus Pseudochromis (Teleostei; Perciformes; Pseudochromidae) from the northwestern Indian Ocean. Revue Française d'Aquariologie Herpétologie, 15, 105–110.
Regan, C.T. (1916) Fishes from Natal, collected by Mr. Romer Robinson. Annals of Durban Museum, 1, 167–170.
Rüppell, E. (1835) Neue Wirbelthiere zu der Fauna von Abyssinien gehörig. Fische des Rothen Meeres. 3. Vol. 1. S. Schmerber, Frankfurt am Main, 28 pp., 7 pls.
Smith, J.L.B. (1954) Pseudoplesiopsine fishes from south and east Africa. Annals and Magazine of Natural History, series 12, 7, 195–208.
Smith, J.L.B. (1955) An especially colourful new pseudochromid fish. Annals and Magazine of Natural History, series 12, 8, 145–148.
Winterbottom, R. (1982) A revision of the congrogadid fish genus Halidesmus (Pisces: Perciformes), with the description of a new species from Kenya and a list of the species included in the family. Canadian Journal of Zoology, 60, 754–763.
Winterbottom, R. & Randall, J.E. (1994) Two new species of congrogadins (Teleostei; Pseudochromidae), with range extensions for four other species. Canadian Journal of Zoology, 72, 750–756.
Zajonz, U. & Khalaf, M (2002, unpubl. report) Inshore fishes of the Socotra Archipelago: diversity and community structure. In: Marine Habitat, Biodiversity and Fisheries Surveys and Management, Report of Phase III (UNOPS YEM/96/G32, C-972248). Apel, M., Krupp, F. & Hariri, K.I. (Eds.): 237–296. Senckenberg Research Institute; Frankfurt a.M., Germany.