| Some problems in the geographical distribution of oceanic midwater fishes in the Atlantic Ocean are discussed. Remarkable differences were observed in the latitudinal distribution of mesopelagic fish species in the North Atlantic Ocean. These can be related to the oceanic circulation. The Gulf Stream system gives rise to a discontinuity in the position of the oceanic Polar Front. This front, a sharp bounary between subpolar and subtropical waters, follows the northern edge of the Gulf Stream in the western part of the Ocean. East of about 25 degree W the Polar Front becomes weak and untraceable. Relatively warm, high-saline-water of the North Atlantic Current flows North and northeastward by the spreading of the Mediterranean Intermediate Water. Due to the... |
