Barreiros, João P.Vieira, Rui P.Machado, Leonardo F.2014-02-202014-02-202014-01Barreiros, J. P.; Vieira, R. P.; Machado, L. F. (2014). "First record of Alosa fallax (Lacépède, 1803) (Teleostei: Clupeiformes:Clupeidae) in the Azores Archipelago, Portugal (NE Atlantic)", Mitteilungen Klosterneuburg, 64(1), 18-23. ISSN 0007-5922.0007-5922http://hdl.handle.net/10400.3/2803Copyright © 2014 All rights reserved.This note reports the first record of Alosa fallax (Lacépède, 1803) in the Azores Archipelago (NE Atlantic, Portugal). Being an anadromous species, this occurrence is quite unexpected since there are no suitable breeding habitats for this species in these volcanic islands, isolated and river less. Although A. fallax is known to migrate offshore, it has never been previously reported in oceanic environments. We discuss this occurrence and theorize on the possibility of the species’ being found in Madeira, another Macaronesian Archipelago, albeit much older and closer to European coasts and thus more suitable to be crossed by A. fallax during their migration routes in pelagic environments. With this record, the number of Clupeid fishes for Azorean waters increases to two, the other being the well known and resident Sardina pilchardus.engAlosa fallaxFirst Record AzoresAzorean Ichthyofaunajournal article2014-01-29