Fishing is a way of life in Istanbul either as a hobby or as a source of income. This is due primarily to the geography of Istanbul particularly the differences in temperature and salinity between the Black Sea and the Mediterranean, it made the waterways surrounding the city especially abundant in fish. Schools of fish pass through with great regularity, and those who spend a few hours fishing are unlikely to come back empty-handed.
Anyone can take a walk over the Galata Bridge from Eminönü to Karaköy, this is the city’s most well known fishing spot. Whether in fair or bad weather and you can’t miss the fishermen standing nearly shoulder-to-shoulder on the bridge’s pedestrian walkway, their fishing rods tied to the rails of the bridges.
Here is a very good photo which i cannot resist to retweet and publish her by @historical pics in Twitter of a fisherman in 1930’s.