Scientific survey report
Danish Baltic International Trawl Survey
2015
The Danish research vessels Dana and Havfisken are used for the
Danish participation in the Baltic International Trawl Survey (BITS),
which, since 1982, has had the purpose of annually monitoring cod and
other species.
Internationally, each nation surveys part of the area, with some
overlap in coverage and depth stratification, in a coordinated sampling
design. After agreement between countries a common standard trawl gear
and standard sampling procedures were implemented in 2000, resulting in
the consistent coverage of the western and central Baltic Sea.
The BITS is conducted twice a year in the first and fourth quarters
as a depth-stratified survey. The strata are based on sub-divisions and
depth layers. Each year the necessary stations are randomly selected
before the beginning of the international trawl surveys, from a list of
clear haul data. These stations are a stratified randomly selected
sub-sample of the possible trawl tracks.
The standard haul is a 30-minutes haul with a towing speed of 3
knots. Trawling only takes place during daylight, defined as the time
between 15 minutes past sunrise and 15 minutes before sunset.
All data can be found in the ICES DATRAS database (https://datras.ices.dk/Data_products/Download/Download_Data_public.aspx) and details about the survey design and survey standardization before 2000 can be found in the ICES BITS manual (Anon. 2000).
Period
Quarter 1
Activity
Here is shown a map with the survey activity for both vessls. The map shows both valid and invalid stations, a station can be deemed invalid if the haoul could not be conducted within the guilines of the survey manual
Trawl Stations
Each trawl stations consists a haul of 30 minutes where all the catch
documented, including litter. Biological samples to determine
e.g. stock, age matuity are taken from individual fish.
Bongo Stations
Each bongo stationsions in conducted with a set of three bongonets,
with net sizes 150, 300 and 500 micrometers. These are used for the
registartion of fishlarvey, plankton abundance and jelly fish.
CTD Stations
CTD (Conductivity - Temperature - Depth), are measured trough the
water column, and used to calculate e.g. the oxygen and salinity
content, key environmental variables for life in the ocean.
CTD Results
Here is shown a map the results of the CTD measurments at the bottom. The heatmap is made with linear interpolation between measurments, and can be seen as the general trend in the monment of the survey. If any CTD stations are not plotted data has not yet been precessed
Bottom oxygen
Bottom temperature
Bottom salinity
Catch Overview
Below is a table with the total catche and catches for selected species, in wiegth and numbers. The numbers are in some instances calculated based on representative subsampling of some abundant species. The maps illustrates for biodiveity the number of different species cougt on each station, and for CPUE (catch per unit effort) the catch in numbers standadized to a unit effort of one hour of hauling.| Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) | |
|---|---|---|---|---|
| Total Catch | 47072.9 | 1780045 | ||
| Cod | 12686.5 | 39649 | 60 | 820 |
| Herring | 11558.3 | 387998 | 50 | 315 |
| Sprat | 10809.4 | 1222191 | 55 | 170 |
| Plaice | 1707.3 | 11274 | 80 | 510 |
| Sole | 18.0 | 62 | 70 | 420 |
CPUE
CPUE (catch per unit effort) shown as the catch in Numbers rasied to
to pr hour of hauling
CPUE for Selected Species
CPUE (catch per unit effort) shown as the catch in Numbers rasied to to pr hour of hauling. The dots indicates the stations, and red dots indicates that a species where not found at all in that station. The scale is different between plots
Cod
Plaice
Sole
Sprat
Herring
Biodiversity
Shown is the Number of species cought by station
Length Distributions
Here is shown the length distribution For the 10 most abundant comercieal species cought during the survey, allocated to each ship. The black line represents the average length distribution of the 5 years previus surveys.
Sprat
Herring
Common dab
Cod
Flounder
Whiting
Plaice
Grey gurnard
Haddock
Brill
All Species Caught
The table below is an overview of all the different species cought in the survey, devided into the different ices areas covered by the surve.
Area 20
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Arnoglossus laterna | Scaldfish | 0.4 | 35 | 110 | 140 |
| Callionymus lyra | Common dragonet | 0.6 | 36 | 180 | 210 |
| Clupea harengus | Herring | 306.7 | 16767 | 95 | 195 |
| Cyclopterus lumpus | Lumpfish | 1.0 | 1 | 300 | 300 |
| Eutrigla gurnardus | Grey gurnard | 1.4 | 33 | 100 | 190 |
| Gadus morhua | Cod | 20.2 | 44 | 140 | 580 |
| Glyptocephalus cynoglossus | Witch | 0.1 | 2 | 240 | 260 |
| Hippoglossoides platessoides | American plaice | 14.7 | 434 | 90 | 250 |
| Limanda limanda | Common dab | 20.0 | 341 | 100 | 270 |
| Lumpenus lampretaeformis | Snake blenny | 0.0 | 2 | 210 | 210 |
| Melanogrammus aeglefinus | Haddock | 0.1 | 3 | 190 | 200 |
| Merlangius merlangus | Whiting | 52.1 | 824 | 100 | 360 |
| Merluccius merluccius | Hake | 0.1 | 1 | 290 | 290 |
| Microstomus kitt | Lemon sole | 1.1 | 15 | 130 | 260 |
| Myoxocephalus scorpius | Sculpin | 0.5 | 2 | 230 | 240 |
| Platichthys flesus | Flounder | 4.6 | 18 | 180 | 350 |
| Pleuronectes platessa | Plaice | 21.4 | 144 | 130 | 350 |
| Pollachius virens | Saithe | 1.7 | 4 | 240 | 460 |
| Scophthalmus rhombus | Brill | 1.0 | 2 | 290 | 340 |
| Solea solea | Sole | 0.3 | 1 | 300 | 300 |
| Sprattus sprattus | Sprat | 60.3 | 21421 | 65 | 90 |
| Trisopterus esmarkii | Norway pout | 0.0 | 4 | 100 | 130 |
Area 21
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Agonus cataphractus | Pogge | 0.5 | 25 | 70 | 170 |
| Amblyraja radiata | Starry ray | 4.9 | 7 | 360 | 470 |
| Ammodytes marinus | Lesser sandeel | 0.1 | 4 | 190 | 210 |
| Arnoglossus laterna | Scaldfish | 0.1 | 9 | 100 | 140 |
| Brama brama | Rays bream (pomfret) | 0.1 | 1 | 220 | 220 |
| Buglossidium luteum | Solenette | 0.0 | 3 | 80 | 80 |
| Callionymus lyra | Common dragonet | 7.1 | 725 | 70 | 210 |
| Callionymus maculatus | Spotted dragonet | 0.1 | 1 | 200 | 200 |
| Chelidonichthys lucerna | Tub gurnard | 0.6 | 3 | 220 | 300 |
| Chelon labrosus | Thick lipped mullet | 0.3 | 2 | 190 | 250 |
| Clupea harengus | Herring | 3648.2 | 208272 | 65 | 305 |
| Cyclopterus lumpus | Lumpfish | 12.8 | 3 | 370 | 490 |
| Enchelyopus cimbrius | Four-bearded rockling | 0.2 | 19 | 120 | 250 |
| Eutrigla gurnardus | Grey gurnard | 22.1 | 414 | 80 | 350 |
| Gadus morhua | Cod | 166.0 | 535 | 90 | 780 |
| Glyptocephalus cynoglossus | Witch | 7.7 | 52 | 170 | 370 |
| Hippoglossoides platessoides | American plaice | 185.0 | 9088 | 60 | 240 |
| Hippoglossus hippoglossus | Atlantic halibut | 2.8 | 2 | 380 | 570 |
| Hyperoplus lanceolatus | Greater sandeel | 0.0 | 2 | 190 | 200 |
| Labrus bergylta | Ballan wrasse | 0.0 | 1 | 90 | 90 |
| Limanda limanda | Common dab | 1479.3 | 32521 | 70 | 300 |
| Lumpenus lampretaeformis | Snake blenny | 1.6 | 239 | 110 | 280 |
| Melanogrammus aeglefinus | Haddock | 25.1 | 116 | 150 | 530 |
| Merlangius merlangus | Whiting | 673.1 | 11861 | 80 | 350 |
| Merluccius merluccius | Hake | 4.7 | 52 | 130 | 400 |
| Microstomus kitt | Lemon sole | 3.5 | 23 | 130 | 320 |
| Mullus surmuletus | Striped red mullet | 0.2 | 7 | 120 | 160 |
| Myoxocephalus scorpius | Sculpin | 27.5 | 274 | 80 | 310 |
| Nephrops norvegicus | Norway lobster | 6.0 | 80 | ||
| Pholis gunnellus | Butter fish | 0.0 | 4 | 170 | 230 |
| Platichthys flesus | Flounder | 589.2 | 2111 | 150 | 460 |
| Pleuronectes platessa | Plaice | 504.9 | 4139 | 80 | 420 |
| Raja clavata | Thornback ray | 3.2 | 1 | 770 | 770 |
| Scophthalmus maximus | Turbot | 6.7 | 10 | 230 | 440 |
| Scophthalmus rhombus | Brill | 13.8 | 46 | 160 | 450 |
| Solea solea | Sole | 5.6 | 29 | 210 | 340 |
| Sprattus sprattus | Sprat | 252.8 | 37354 | 55 | 155 |
| Squalus acanthias | Spurdog | 2.0 | 6 | 390 | 500 |
| Syngnathidae | Pipefishes and seahorses | 0.0 | 3 | 190 | 240 |
| Trachinus draco | Greater weever fish | 96.1 | 593 | 140 | 380 |
| Trisopterus esmarkii | Norway pout | 0.6 | 66 | 80 | 150 |
| Trisopterus minutus | Poor-cod | 0.9 | 11 | 170 | 220 |
| Zoarces viviparus | Eelpout | 0.3 | 10 | 120 | 260 |
Area 22
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Agonus cataphractus | Pogge | 1.3 | 26 | 70 | 170 |
| Arnoglossus laterna | Scaldfish | 0.1 | 6 | 130 | 150 |
| Callionymus lyra | Common dragonet | 0.2 | 8 | 70 | 210 |
| Callionymus maculatus | Spotted dragonet | 0.0 | 1 | 150 | 150 |
| Clupea harengus | Herring | 392.8 | 30221 | 50 | 225 |
| Cyclopterus lumpus | Lumpfish | 31.8 | 21 | 180 | 450 |
| Entelurus aequoreus | Snake pipefish | 0.2 | 2 | 330 | 420 |
| Eutrigla gurnardus | Grey gurnard | 0.1 | 2 | 120 | 180 |
| Gadus morhua | Cod | 102.4 | 320 | 110 | 820 |
| Gasterosteus aculeatus | Three-spined stickleback | 0.0 | 3 | 50 | 50 |
| Glyptocephalus cynoglossus | Witch | 0.2 | 1 | 280 | 280 |
| Hippoglossoides platessoides | American plaice | 33.2 | 799 | 90 | 320 |
| Hyperoplus lanceolatus | Greater sandeel | 0.2 | 7 | 170 | 220 |
| Limanda limanda | Common dab | 1572.6 | 27946 | 70 | 360 |
| Lumpenus lampretaeformis | Snake blenny | 0.3 | 16 | 160 | 240 |
| Merlangius merlangus | Whiting | 10.6 | 215 | 110 | 290 |
| Merluccius merluccius | Hake | 0.4 | 2 | 270 | 320 |
| Myoxocephalus scorpius | Sculpin | 34.6 | 426 | 90 | 330 |
| Pholis gunnellus | Butter fish | 0.1 | 6 | 150 | 240 |
| Platichthys flesus | Flounder | 291.6 | 1463 | 140 | 440 |
| Pleuronectes platessa | Plaice | 810.3 | 4805 | 90 | 490 |
| Pomatoschistus spp. | Sand gobies | 0.2 | 18 | 50 | 110 |
| Scomber scombrus | Mackerel | 0.2 | 1 | 250 | 250 |
| Scophthalmus maximus | Turbot | 7.2 | 17 | 180 | 380 |
| Scophthalmus rhombus | Brill | 9.6 | 28 | 150 | 490 |
| Solea solea | Sole | 11.5 | 31 | 70 | 420 |
| Sprattus sprattus | Sprat | 153.5 | 26727 | 65 | 155 |
| Syngnathidae | Pipefishes and seahorses | 0.0 | 1 | 200 | 200 |
| Zoarces viviparus | Eelpout | 5.6 | 156 | 110 | 290 |
Area 23
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Amblyraja radiata | Starry ray | 0.9 | 1 | 490 | 490 |
| Buglossidium luteum | Solenette | 0.0 | 1 | 120 | 120 |
| Clupea harengus | Herring | 88.4 | 4328 | 95 | 210 |
| Cyclopterus lumpus | Lumpfish | 4.3 | 1 | 440 | 440 |
| Eutrigla gurnardus | Grey gurnard | 0.2 | 1 | 320 | 320 |
| Gadus morhua | Cod | 890.1 | 1662 | 120 | 670 |
| Hippoglossoides platessoides | American plaice | 5.9 | 122 | 130 | 220 |
| Limanda limanda | Common dab | 321.1 | 2268 | 100 | 320 |
| Melanogrammus aeglefinus | Haddock | 1.3 | 2 | 370 | 400 |
| Merlangius merlangus | Whiting | 75.2 | 757 | 120 | 350 |
| Merluccius merluccius | Hake | 0.1 | 1 | 260 | 260 |
| Platichthys flesus | Flounder | 79.9 | 231 | 200 | 420 |
| Pleuronectes platessa | Plaice | 182.6 | 590 | 180 | 510 |
| Scophthalmus maximus | Turbot | 0.7 | 1 | 330 | 330 |
| Solea solea | Sole | 0.7 | 1 | 370 | 370 |
| Sprattus sprattus | Sprat | 62.8 | 12299 | 60 | 165 |
Area 25
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Alosa fallax | Twaite shad | 0.3 | 1 | 340 | 340 |
| Clupea harengus | Herring | 6960.9 | 125342 | 80 | 315 |
| Cyclopterus lumpus | Lumpfish | 0.2 | 1 | 160 | 160 |
| Enchelyopus cimbrius | Four-bearded rockling | 25.9 | 391 | 110 | 330 |
| Engraulis encrasicolus | Anchovy | 2.8 | 258 | 110 | 150 |
| Eutrigla gurnardus | Grey gurnard | 0.1 | 1 | 220 | 220 |
| Gadus morhua | Cod | 11391.4 | 36710 | 60 | 670 |
| Gasterosteus aculeatus | Three-spined stickleback | 0.0 | 13 | 40 | 60 |
| Hyperoplus lanceolatus | Greater sandeel | 0.0 | 2 | 180 | 200 |
| Lumpenus lampretaeformis | Snake blenny | 0.0 | 2 | 180 | 210 |
| Melanogrammus aeglefinus | Haddock | 1.1 | 2 | 370 | 390 |
| Merlangius merlangus | Whiting | 79.1 | 428 | 150 | 430 |
| Mullus surmuletus | Striped red mullet | 0.0 | 1 | 140 | 140 |
| Myoxocephalus scorpius | Sculpin | 37.7 | 222 | 130 | 290 |
| Mytilus edulis | Blue mussel | 0.1 | 0 | ||
| Osmerus eperlanus | European smelt | 0.1 | 9 | 130 | 150 |
| Platichthys flesus | Flounder | 4361.3 | 22755 | 110 | 460 |
| Pleuronectes platessa | Plaice | 187.4 | 1591 | 160 | 430 |
| Saduria entomon | Saduria | 1.7 | 7 | ||
| Scomber scombrus | Mackerel | 3.3 | 11 | 240 | 490 |
| Scophthalmus maximus | Turbot | 10.5 | 26 | 240 | 351 |
| Sprattus sprattus | Sprat | 10262.2 | 1122927 | 65 | 170 |
| Trachurus trachurus | Horse mackerel | 0.4 | 23 | 110 | 140 |
| Trisopterus minutus | Poor-cod | 0.0 | 3 | 80 | 80 |
Area 26
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Clupea harengus | Herring | 161.4 | 3069 | 145 | 240 |
| Gadus morhua | Cod | 116.4 | 378 | 200 | 530 |
| Platichthys flesus | Flounder | 1.5 | 6 | 260 | 360 |
| Pleuronectes platessa | Plaice | 0.6 | 5 | 200 | 260 |
| Sprattus sprattus | Sprat | 17.7 | 1463 | 75 | 145 |
Quarter 4
Activity
Here is shown a map with the survey activity for both vessls. The map shows both valid and invalid stations, a station can be deemed invalid if the haoul could not be conducted within the guilines of the survey manual
Trawl Stations
Each trawl stations consists a haul of 30 minutes where all the catch
documented, including litter. Biological samples to determine
e.g. stock, age matuity are taken from individual fish.
Bongo Stations
Each bongo stationsions in conducted with a set of three bongonets,
with net sizes 150, 300 and 500 micrometers. These are used for the
registartion of fishlarvey, plankton abundance and jelly fish.
CTD Stations
CTD (Conductivity - Temperature - Depth), are measured trough the
water column, and used to calculate e.g. the oxygen and salinity
content, key environmental variables for life in the ocean.
CTD Results
Here is shown a map the results of the CTD measurments at the bottom. The heatmap is made with linear interpolation between measurments, and can be seen as the general trend in the monment of the survey. If any CTD stations are not plotted data has not yet been precessed
Bottom oxygen
Bottom temperature
Bottom salinity
Catch Overview
Below is a table with the total catche and catches for selected species, in wiegth and numbers. The numbers are in some instances calculated based on representative subsampling of some abundant species. The maps illustrates for biodiveity the number of different species cougt on each station, and for CPUE (catch per unit effort) the catch in numbers standadized to a unit effort of one hour of hauling.| Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) | |
|---|---|---|---|---|
| Total Catch | 31788.6 | 495549 | ||
| Cod | 12002.7 | 41674 | 40 | 840 |
| Herring | 8241.7 | 200272 | 60 | 295 |
| Plaice | 3148.1 | 17309 | 110 | 460 |
| Sprat | 828.5 | 70045 | 55 | 165 |
| Sole | 26.9 | 113 | 100 | 440 |
CPUE
CPUE (catch per unit effort) shown as the catch in Numbers rasied to
to pr hour of hauling
CPUE for Selected Species
CPUE (catch per unit effort) shown as the catch in Numbers rasied to to pr hour of hauling. The dots indicates the stations, and red dots indicates that a species where not found at all in that station. The scale is different between plots
Cod
Plaice
Sole
Sprat
Herring
Biodiversity
Shown is the Number of species cought by station
Length Distributions
Here is shown the length distribution For the 10 most abundant comercieal species cought during the survey, allocated to each ship. The black line represents the average length distribution of the 5 years previus surveys.
Herring
Sprat
Common dab
Cod
Whiting
Plaice
Flounder
Norway pout
Grey gurnard
Horse mackerel
All Species Caught
The table below is an overview of all the different species cought in the survey, devided into the different ices areas covered by the surve.
Area 20
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Callionymus lyra | Common dragonet | 0.1 | 4 | 90 | 160 |
| Chelidonichthys lucerna | Tub gurnard | 0.6 | 2 | 290 | 310 |
| Clupea harengus | Herring | 71.8 | 2154 | 85 | 220 |
| Enchelyopus cimbrius | Four-bearded rockling | 2.8 | 27 | 200 | 300 |
| Engraulis encrasicolus | Anchovy | 0.3 | 8 | 170 | 180 |
| Eutrigla gurnardus | Grey gurnard | 7.0 | 172 | 130 | 250 |
| Gadus morhua | Cod | 80.1 | 95 | 160 | 800 |
| Hippoglossoides platessoides | American plaice | 1.4 | 21 | 140 | 230 |
| Limanda limanda | Common dab | 60.7 | 405 | 160 | 280 |
| Melanogrammus aeglefinus | Haddock | 0.1 | 2 | 150 | 150 |
| Merlangius merlangus | Whiting | 120.4 | 4032 | 100 | 250 |
| Merluccius merluccius | Hake | 1.2 | 4 | 300 | 360 |
| Nephrops norvegicus | Norway lobster | 0.3 | 6 | ||
| Platichthys flesus | Flounder | 0.4 | 1 | 330 | 330 |
| Pleuronectes platessa | Plaice | 15.1 | 45 | 170 | 400 |
| Pollachius virens | Saithe | 1.3 | 2 | 400 | 420 |
| Scophthalmus rhombus | Brill | 0.5 | 1 | 310 | 310 |
| Squalus acanthias | Spurdog | 180.5 | 47 | 580 | 1100 |
| Trisopterus minutus | Poor-cod | 0.0 | 1 | 160 | 160 |
Area 21
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Agonus cataphractus | Pogge | 0.1 | 4 | 140 | 170 |
| Amblyraja radiata | Starry ray | 3.2 | 5 | 420 | 460 |
| Ammodytes marinus | Lesser sandeel | 0.0 | 1 | 160 | 160 |
| Ammodytes tobianus | Sandeel | 0.0 | 1 | 160 | 160 |
| Arnoglossus laterna | Scaldfish | 1.0 | 117 | 50 | 160 |
| Buglossidium luteum | Solenette | 0.0 | 6 | 80 | 90 |
| Callionymidae | Dragonets | 2.1 | 92 | 90 | 210 |
| Callionymus lyra | Common dragonet | 8.7 | 911 | 70 | 260 |
| Callionymus maculatus | Spotted dragonet | 2.1 | 93 | 80 | 180 |
| Cancer pagurus | Edible crab | 11.3 | 18 | ||
| Cephalopoda | Squids and octopusses | 3.0 | 468 | ||
| Chelidonichthys lucerna | Tub gurnard | 2.5 | 10 | 230 | 360 |
| Clupea harengus | Herring | 1585.5 | 64606 | 80 | 250 |
| Ctenolabrus rupestris | Goldsinny | 0.0 | 3 | 70 | 100 |
| Cyclopterus lumpus | Lumpfish | 0.4 | 1 | 200 | 200 |
| Enchelyopus cimbrius | Four-bearded rockling | 0.8 | 25 | 140 | 240 |
| Engraulis encrasicolus | Anchovy | 0.6 | 41 | 70 | 170 |
| Entelurus aequoreus | Snake pipefish | 0.1 | 4 | 230 | 370 |
| Eutrigla gurnardus | Grey gurnard | 28.9 | 524 | 100 | 340 |
| Gadus morhua | Cod | 255.7 | 224 | 130 | 840 |
| Glyptocephalus cynoglossus | Witch | 1.7 | 11 | 170 | 380 |
| Gymnammodytes semisquamatus | Smoothed sandeel | 1.5 | 116 | 150 | 190 |
| Hippoglossoides platessoides | American plaice | 170.7 | 6410 | 90 | 270 |
| Hippoglossus hippoglossus | Atlantic halibut | 1.8 | 1 | 550 | 550 |
| Hyperoplus lanceolatus | Greater sandeel | 0.5 | 26 | 160 | 220 |
| Limanda limanda | Common dab | 839.5 | 14906 | 100 | 320 |
| Loligo forbesii | Northern squid | 2.2 | 4 | ||
| Lumpenus lampretaeformis | Snake blenny | 0.0 | 3 | 150 | 190 |
| Melanogrammus aeglefinus | Haddock | 0.2 | 3 | 150 | 210 |
| Merlangius merlangus | Whiting | 549.6 | 14659 | 70 | 350 |
| Merluccius merluccius | Hake | 6.6 | 36 | 190 | 370 |
| Microstomus kitt | Lemon sole | 2.5 | 16 | 160 | 300 |
| Molva molva | Ling | 1.2 | 1 | 590 | 590 |
| Mullus surmuletus | Striped red mullet | 0.2 | 1 | 240 | 240 |
| Myoxocephalus scorpius | Sculpin | 7.3 | 51 | 120 | 250 |
| Nephrops norvegicus | Norway lobster | 28.3 | 624 | ||
| Pholis gunnellus | Butter fish | 0.1 | 6 | 100 | 190 |
| Platichthys flesus | Flounder | 101.6 | 329 | 140 | 430 |
| Pleuronectes platessa | Plaice | 731.1 | 4294 | 130 | 440 |
| Pomatoschistus spp. | Sand gobies | 0.1 | 6 | 60 | 120 |
| Raja clavata | Thornback ray | 286.7 | 104 | 380 | 910 |
| Scomber scombrus | Mackerel | 0.9 | 5 | 160 | 340 |
| Scophthalmus maximus | Turbot | 11.2 | 11 | 240 | 470 |
| Scophthalmus rhombus | Brill | 34.7 | 99 | 200 | 440 |
| Scyliorhinus canicula | Lesser-spotted dogfish | 0.6 | 1 | 550 | 550 |
| Solea solea | Sole | 12.1 | 53 | 180 | 420 |
| Spinachia spinachia | Ten spined stickleback | 0.0 | 2 | 120 | 150 |
| Sprattus sprattus | Sprat | 296.5 | 24397 | 55 | 160 |
| Squalus acanthias | Spurdog | 27.3 | 10 | 360 | 990 |
| Symphodus melops | Corkwing | 0.0 | 3 | 100 | 110 |
| Trachinus draco | Greater weever fish | 31.5 | 411 | 90 | 360 |
| Trachurus trachurus | Horse mackerel | 0.4 | 42 | 60 | 110 |
| Trisopterus esmarkii | Norway pout | 11.5 | 1462 | 70 | 130 |
| Zoarces viviparus | Eelpout | 0.1 | 3 | 180 | 220 |
Area 22
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Agonus cataphractus | Pogge | 0.6 | 22 | 50 | 180 |
| Amblyraja radiata | Starry ray | 1.9 | 3 | 380 | 490 |
| Arnoglossus laterna | Scaldfish | 3.4 | 145 | 110 | 150 |
| Callionymus lyra | Common dragonet | 2.1 | 71 | 70 | 210 |
| Callionymus maculatus | Spotted dragonet | 0.2 | 22 | 80 | 120 |
| Chelidonichthys lucerna | Tub gurnard | 1.0 | 4 | 260 | 300 |
| Clupea harengus | Herring | 69.3 | 3290 | 60 | 225 |
| Enchelyopus cimbrius | Four-bearded rockling | 0.1 | 2 | 170 | 180 |
| Engraulis encrasicolus | Anchovy | 1.0 | 125 | 60 | 170 |
| Eutrigla gurnardus | Grey gurnard | 4.6 | 94 | 60 | 340 |
| Gadus morhua | Cod | 10.3 | 50 | 100 | 790 |
| Gobius niger | Black goby | 0.1 | 20 | 60 | 90 |
| Hippoglossoides platessoides | American plaice | 42.9 | 960 | 90 | 290 |
| Labrus bergylta | Ballan wrasse | 0.1 | 2 | 120 | 150 |
| Limanda limanda | Common dab | 2183.7 | 40806 | 70 | 320 |
| Lumpenus lampretaeformis | Snake blenny | 0.1 | 3 | 230 | 300 |
| Merlangius merlangus | Whiting | 35.5 | 698 | 80 | 340 |
| Microstomus kitt | Lemon sole | 0.2 | 1 | 250 | 250 |
| Mullus surmuletus | Striped red mullet | 0.0 | 1 | 80 | 80 |
| Myoxocephalus scorpius | Sculpin | 208.1 | 1623 | 120 | 300 |
| Nephrops norvegicus | Norway lobster | 0.1 | 1 | ||
| Pholis gunnellus | Butter fish | 0.1 | 6 | 150 | 200 |
| Platichthys flesus | Flounder | 656.6 | 2599 | 120 | 450 |
| Pleuronectes platessa | Plaice | 1921.1 | 10507 | 110 | 430 |
| Pomatoschistus spp. | Sand gobies | 653.4 | 62354 | 40 | 130 |
| Scophthalmus maximus | Turbot | 25.8 | 41 | 200 | 480 |
| Scophthalmus rhombus | Brill | 5.6 | 20 | 120 | 390 |
| Solea solea | Sole | 14.3 | 57 | 100 | 440 |
| Sprattus sprattus | Sprat | 325.6 | 30695 | 55 | 150 |
| Trachinus draco | Greater weever fish | 1.3 | 31 | 90 | 270 |
| Trachurus trachurus | Horse mackerel | 0.9 | 90 | 60 | 120 |
| Zoarces viviparus | Eelpout | 0.8 | 20 | 100 | 270 |
Area 23
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Amblyraja radiata | Starry ray | 2.2 | 3 | 380 | 470 |
| Arnoglossus laterna | Scaldfish | 0.0 | 2 | 120 | 140 |
| Callionymus lyra | Common dragonet | 0.8 | 76 | 70 | 170 |
| Clupea harengus | Herring | 13.0 | 352 | 105 | 285 |
| Enchelyopus cimbrius | Four-bearded rockling | 0.0 | 1 | 190 | 190 |
| Eutrigla gurnardus | Grey gurnard | 7.4 | 82 | 140 | 310 |
| Gadus morhua | Cod | 206.5 | 273 | 180 | 780 |
| Hippoglossoides platessoides | American plaice | 50.6 | 1226 | 100 | 310 |
| Labrus bergylta | Ballan wrasse | 0.0 | 1 | 100 | 100 |
| Limanda limanda | Common dab | 279.4 | 3157 | 100 | 300 |
| Melanogrammus aeglefinus | Haddock | 24.7 | 38 | 240 | 530 |
| Merlangius merlangus | Whiting | 31.2 | 594 | 80 | 460 |
| Merluccius merluccius | Hake | 0.2 | 1 | 270 | 270 |
| Microstomus kitt | Lemon sole | 0.9 | 3 | 210 | 320 |
| Nephrops norvegicus | Norway lobster | 0.8 | 6 | ||
| Platichthys flesus | Flounder | 30.3 | 81 | 160 | 430 |
| Pleuronectes platessa | Plaice | 65.6 | 196 | 180 | 390 |
| Salmo trutta | Sea trout | 4.5 | 1 | 710 | 710 |
| Scophthalmus rhombus | Brill | 2.4 | 4 | 250 | 390 |
| Solea solea | Sole | 0.5 | 3 | 190 | 290 |
| Sprattus sprattus | Sprat | 14.8 | 975 | 95 | 165 |
| Syngnathidae | Pipefishes and seahorses | 0.0 | 1 | 350 | 350 |
| Trachinus draco | Greater weever fish | 0.1 | 2 | 110 | 240 |
| Trachurus trachurus | Horse mackerel | 0.3 | 9 | 70 | 320 |
Area 25
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Alosa fallax | Twaite shad | 0.3 | 1 | 310 | 310 |
| Clupea harengus | Herring | 4560.4 | 89012 | 110 | 295 |
| Cyclopterus lumpus | Lumpfish | 5.3 | 13 | 160 | 220 |
| Enchelyopus cimbrius | Four-bearded rockling | 53.1 | 759 | 70 | 340 |
| Engraulis encrasicolus | Anchovy | 0.1 | 3 | 100 | 180 |
| Gadus morhua | Cod | 10409.4 | 37570 | 40 | 740 |
| Gasterosteus aculeatus | Three-spined stickleback | 0.0 | 4 | 60 | 60 |
| Limanda limanda | Common dab | 0.3 | 2 | 230 | 250 |
| Lumpenus lampretaeformis | Snake blenny | 0.0 | 2 | 210 | 220 |
| Melanogrammus aeglefinus | Haddock | 0.5 | 1 | 400 | 400 |
| Merlangius merlangus | Whiting | 93.7 | 504 | 130 | 410 |
| Myoxocephalus scorpius | Sculpin | 5.5 | 35 | 170 | 270 |
| Mytilus edulis | Blue mussel | 2.1 | 0 | ||
| Osmerus eperlanus | European smelt | 0.1 | 2 | 140 | 150 |
| Platichthys flesus | Flounder | 525.7 | 2159 | 150 | 410 |
| Pleuronectes platessa | Plaice | 413.3 | 2256 | 140 | 460 |
| Pomatoschistus spp. | Sand gobies | 0.3 | 399 | 30 | 60 |
| Saduria entomon | Saduria | 1.7 | 455 | ||
| Scomber scombrus | Mackerel | 1.4 | 3 | 300 | 440 |
| Scophthalmus maximus | Turbot | 16.1 | 41 | 180 | 370 |
| Sprattus sprattus | Sprat | 177.2 | 12753 | 80 | 160 |
| Trisopterus esmarkii | Norway pout | 0.1 | 1 | 210 | 210 |
| Trisopterus minutus | Poor-cod | 0.0 | 1 | 160 | 160 |
| Zoarces viviparus | Eelpout | 0.0 | 1 | 220 | 220 |
Area 26
| Latin name | English name | Weight (kg) | Number | Min. Length (mm) | Max. Length (mm) |
|---|---|---|---|---|---|
| Clupea harengus | Herring | 1941.8 | 40858 | 140 | 280 |
| Cyclopterus lumpus | Lumpfish | 0.6 | 2 | 130 | 180 |
| Enchelyopus cimbrius | Four-bearded rockling | 0.7 | 11 | 130 | 290 |
| Gadus morhua | Cod | 1040.8 | 3462 | 40 | 710 |
| Gasterosteus aculeatus | Three-spined stickleback | 0.0 | 1 | 60 | 60 |
| Myoxocephalus scorpius | Sculpin | 0.6 | 3 | 200 | 270 |
| Platichthys flesus | Flounder | 1.9 | 8 | 240 | 330 |
| Pleuronectes platessa | Plaice | 2.0 | 11 | 230 | 340 |
| Pomatoschistus spp. | Sand gobies | 0.0 | 1 | ||
| Saduria entomon | Saduria | 1.0 | 250 | ||
| Sprattus sprattus | Sprat | 14.4 | 1226 | 90 | 140 |