Scientia Marina, Vol 81, No 4 (2017)

Arnoglossus nigrofilamentosus n. sp., a new species of flounder (Teleostei: Bothidae) from off the Mediterranean coast of Israel, probably a new case of Lessepsian migration

Ronald Fricke , Germany

Daniel Golani
National Natural History Collections and Department of Ecology, Evolution and Behavior, The Hebrew University of Jerusalem, Israel

Brenda Appelbaum-Golani
Mt. Scopus Library, The Hebrew University of Jerusalem, Israel


The filamentous flounder Arnoglossus nigrofilamentosus n. sp. is described from four specimens collected in the southeastern Mediterranean near Tel-Aviv, Israel on 5 May 2017. The new species is characterized as follows: second to sixth dorsal-fin rays elongate and filamentous, dorsal-fin rays 78-84, anal-fin rays 61-66, pectoral-fin rays on ocular side 12-13, on blind side 7-9, caudal-fin rays iii,11,iii , lateral-line scales 52-54, gill rakers 0 + 4-5, not serrated, interorbital a narrow bony ridge without scales in the middle, interorbital width 11% to 16% of upper orbit diameter, no enlarged teeth anteriorly in upper jaw, and prevomer small, not enlarged, weakly projecting into mouth cavity; body in fresh specimens pale (may have been dark before the epidermis was abrased), head, peritoneum and vertical fins black. The new species is described and compared with similar species. Though the species has not yet been observed in the northern Red Sea, it probably originates from the Gulf of Suez, so this finding represents a probable new case of Lessepsian migration.


Arnoglossus nigrofilamentosus; Bothidae; new species; distribution; Lessepsian migration; Red Sea

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