Anchovy - lvl 1,
Mullet - lvl 1,
Tunny - lvl 1,
Sardine - lvl 2,
Swordfish - lvl 2,
Chub Mackerel - lvl 3*
Cod - lvl 3,
Herring - lvl 4,
Mackerel - lvl 4,
Electric Ray - lvl 5,
salmon, trout - lvl 5 (yeah that counts as one product - strange),
Sea Urchin - lvl 5,
Eel - lvl 6,
Ratfish - lvl 6,
Sea Cucumber - lvl 6,
Amphipod - lvl 7,
Sturgeon - lvl 7,
Squid - lvl 7,
Sea horse - lvl 8,
Seaweed - lvl 8,
White fin dolphin - lvl 9.

Fishing For Eaglewood and Cold Iron

Seville:
Eaglewood lvl 6
Cold Iron LvL 6

Also gets
LvL 3,4,6 Marine Products
LvL 3,4 Shells
LVL 3 cloth

Lisbon:
Eaglewood LvL 6
Cold Iron LvL 6

Also gets
LvL 3,4,6
Marine Products
lvl 3,4 shells
LVL 4 cloth

Magadishu:
Eaglewood LvL7
Cold Iron LvL 7

Also gets
(that I can remember at this moment)LvL 7 Marine Products
LvL 4,6,7 shells
LvL 5 cloth.

Mozambique: :By Jacek07

Secondary Eaglewood lvl 7
Secondary Cold Iron LvL 7

Also gets
LvL 3, 5 Marine Products (and something that can't be caught with the second level fishnet)
LvL 5, 7 Shells
Level 5 timber

Other fishing places-Still checking out so not complete as yet.

Dakar:
LvL 2,5 Marine Product
LvL 3,6 Shell
Brass

*Following contributed by Jacek07*

Las Palmas:
Eaglewood lvl 6
Cold Iron LvL 6

Also gets
LvL 3,4,6 Marine Products
LvL 3,4 Shells

Extra resource: LVL 3 timber

Semarang:

LvL 3, 6 Marine products
LvL 5, 8 shells

Extra resource: Green silver (lvl 6)
Amsterdam:
LvL 4,5 Marine Product
LvL 3, 6 Shell
Bronze

Algiers:
LvL 2, 3,5 Marine Product
LvL 2, 3 Shell
Bronze

Hamburg:
LvL 4 Marine Product
LvL 5 Shell
LvL 4 timber

Cape Town:
Secondary Eaglewood lvl 7
Secondary Cold Iron LvL 7

Also gets
LvL 2, 5 Marine Products (and something that can't be caught with the second level fishnet)
LvL 4, 7 Shells
Copper

Genoa:
LvL 2, 3, 5 Marine Product
LvL 2, 3 Shell
Also gets: none???? (anybody can confirm this yet?)

Oslo:
LvL 4 Marine Product (and higher, only to be caught with highest level fishnet)
LvL 5, 8 Shell
Extra resources: Brass.

Bordeaux:

LvL 4, 5 Marine Products (and something that can't be caught with the second level fishnet)
LvL 6 Shells

Extra resources: Brass

Luanda:

LvL 2, 5 Marine Products (and something that can't be caught with the second level fishnet)
LvL 4, 6 Shells

Extra resources: Level 4 cloth

Accra:

LvL 2, 5 Marine Products (and something that can't be caught with the second level fishnet)
LvL 4, 6 Shells

Extra resources: Level 4 timber

Melacca:

LvL 3, 6 Marine Products (and more that can't be caught with the second level fishnet)
LvL 5, 8 Shells

Extra resources: ?

Bombay:

LvL 2, 6 Marine Products (and more that can't be caught with the second level fishnet)
LvL 5, 7 Shells

Extra resources: ?

Sri Lanka:

LvL 2, 6 Marine Products (and more that can't be caught with the second level fishnet)
LvL 8 Shells

Extra resources: ?

Basra:

LvL 2, 5 Marine Products (and more that can't be caught with the second level fishnet)
LvL 5, 7 Shells

Extra resources: ? (damn, forgot to write down, think it's lvl 5 cloth)

Quanzhou:

Lvl 6 Marine Products (and much more that can't be caught with the second level fishnet)
LvL 6 Shells

Extra resources: ? (damn, forgot to write down, think it's lvl 5 cloth)

Zhigu:

Lvl 6 Marine Products (and much more that can't be caught with the second level fishnet)
LvL 6 Shells

Extra resources: ?

Nagasaki:

Lvl 6 Marine Products (and much more that can't be caught with the second level fishnet)
LvL 6 Shells

Extra resources: ?

Reykjavik:

LvL 4 Marine Products (and more that can't be caught with the second level fishnet)
LvL 4 Shells

Extra resources: Level 6 cloth

Aden:

Lvl 2, 5 marine products
Lvl 5, 7 shells

Extra resources: forgot to write down

*Following contributed by iconized*

Stockholm:
LvL 4, 5 Marine Products (and something that can't be caught with the second level fishnet)
LvL 3 Shells

Extra ResourcesL: Level 4 Cloth