Fish @ Bosphorus


These are some of the fish caught during the migration seasons.

The ancient name of “Bosphorus” means “Cow Passage”. As a passage that can be traversed easily, it has facilitated the spread of civilizations between Asia and Europe and the development of trade and other relations.

The Bosphorus is approximately 30 km long, and on the surface, the Bosphorus flows like a river from the Black Sea to the Marmara. This current gets much stronger and becomes truly dangerous at certain places and below the surface current, there is another current flowing in the opposite direction.

Because of the currents and the different temperatures on various levels, the Bosphorus is a paradise for fish. The fish migrate between the Black Sea and the Marmara according to the season and right now is the time.

The “Anavasya” migration from the Black Sea to the Marmara, starts in September. Schools of fish fatten up on a myriad of plankton, then migrate down from the Bosphorus.

First come the little tunny ( followed by bluefish towards the end of September. Large bluefish and bonito appear in mid-October and the Turbot pictured above was caught in the Black sea.


The seasonal distribution and migration pattern of the Black Sea turbot Psetta maxima, specimens were collected off Trabzon, Turkey, in the eastern Black Sea. A total of 422 specimens were caught by 364 otter trawl hauls in 95 cruises from 24 July 1997 to 19 February 1999. Average catch per unit effort was 1.2. The turbot were distributed between 5 m and 70 m depth where the bottom water temperatures varied from 26.4ºC down to 8.0ºC. They were found mainly at 10 m in July-October and at 5-60 m in November-March.
However, the turbot were found in high densities at <20 m depth from April to June. Thus, it appears that the
Black Sea turbot migrates from deeper water to shallow coastal waters during the spawning season, April to
June. Off Trabzon, Psetta maxima spawns in coastal areas <20 m deep.