Where to eat fresh fish and seafood in Istanbul (budget-friendly spots)?

For balık dürüm in Karaköy, suggested options include Mario The Fishermen / Murat The Fishermen, Lion Balık Dürüm, Sokak Lezzeti Tarihi Balık Dürümcü Mehmet Usta, Balıkçı Yusuf, MAFish Wrap, Meşhur Karaköy Balık Dürümcüsü Azat Usta, and Marmara Balık Dürüm.

Other named seafood options are Meşhur Tarihi Eminönü Balık Ekmek Yılmaz Usta in Eminönü and Karaköy Fish House (Karaköy Balık Evi).

Kennedy Street has municipal social cafés/restaurants with prices lower than standard restaurants, which can be a budget option near Yenikapı.

Bdino Fish Wrap in Karaköy (Kemankeş-Karamustafapaşa neighborhood, Gümüş Halka street, 2A) is recommended: a fish wrap (balık dürüm) for 250 lira, stuffed mussels, fresh fish, sometimes beer available.

The Rumeli Kavağı waterfront area on the Bosphorus has a dense cluster of small fish restaurants — worth asking locals which one's currently best, but the area itself is a reliable bet for fish.

Stuffed mussels (midye dolma) are a must-try Istanbul street snack, sold at many seaside spots and fish stalls.

In the Sirkeci area you can find affordable fish wraps (balık ekmek) at street stalls — pick busy spots with high turnover to make sure the fish is fresh.

In the Ortaköy and Beşiktaş districts, look for fish-filled wraps (fish shawarma-style) — a less famous but existing option in these Bosphorus-side neighborhoods.

Near Kumkapı Square, several decent fish restaurants are said to be clustered together — the neighborhood is traditionally known for its seafood dining.

At the Kadıköy Çarşı market you can buy fresh seafood and have it cooked for you right there — a solid option if you want guaranteed freshness.

The area around the Karaköy fish market (Karaköy Balık Pazarı) is worth checking for tasty, affordable fish — the whole location is seafood-oriented.