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Estimated mean weights (EMWs) for farmed finfish species


This page lists species for which an estimated mean weight (EMW) was obtained, used to estimate farmed fish numbers. Click on an 'EMW id' hyperlink for info on data sources. Scroll to end for notes.
EMW idFAO species categoryScientific nameA multi-species category?Smallest species in group EMW idLargest species in group EMW id
EMW-6Amberjacks neiSeriola sppYEMW-99EMW-90
EMW-7American yellow perchPerca flavescensN
EMW-8Amur catfishSilurus asotusN
EMW-15Asian swamp eelMonopterus albusN
EMW-17AtipaHoplosternum littoraleN
EMW-18Atlantic bluefin tunaThunnus thynnusN
EMW-19Atlantic codGadus morhuaN
EMW-20Atlantic halibutHippoglossus hippoglossusN
EMW-21Atlantic salmonSalmo salarN
EMW-25Barramundi(=Giant seaperch)Lates calcariferN
EMW-26Bastard halibutParalichthys olivaceusN
EMW-29Bighead carpHypophthalmichthys nobilisN
EMW-30Black carpMylopharyngodon piceusN
EMW-34Blue tilapiaOreochromis aureusN
EMW-37Brook troutSalvelinus fontinalisN
EMW-38Brown-marbled grouperEpinephelus fuscoguttatusN
EMW-40CachamaColossoma macropomumN
EMW-41Africa-bighead catfish, hybridClarias gariepinus x C. macrocephalusN
EMW-42Catfishes neiIctalurus sppYEMW-45EMW-45
EMW-43CatlaCatla catlaN
EMW-45Channel catfishIctalurus punctatusN
EMW-47Chars neiSalvelinus sppYEMW-37EMW-37
EMW-49Chinook(=Spring=King) salmonOncorhynchus tshawytschaN
EMW-53Climbing perchAnabas testudineusN
EMW-55CobiaRachycentron canadumN
EMW-56Coho(=Silver) salmonOncorhynchus kisutchN
EMW-57Common carpCyprinus carpioN
EMW-60Common soleSolea soleaN
EMW-62Crucian carpCarassius carassiusN
EMW-69European eelAnguilla anguillaN
EMW-71European perchPerca fluviatilisN
EMW-72European seabassDicentrarchus labraxN
EMW-73European whitefishCoregonus lavaretusN
EMW-76Flathead grey mulletMugil cephalusN
EMW-79Silver, bighead carps neiHypophthalmichthys sppYEMW-182EMW-29
EMW-80Giant gouramiOsphronemus goramyN
EMW-81Gilthead seabreamSparus aurataN
EMW-86Gouramis neiTrichogaster sppYEMW-189EMW-189
EMW-87Grass carp(=White amur)Ctenopharyngodon idellusN
EMW-90Greater amberjackSeriola dumeriliN
EMW-91Groupers neiEpinephelus sppY
EMW-95Indonesian snakeheadChanna micropeltesN
EMW-99Japanese amberjackSeriola quinqueradiataN
EMW-100Japanese eelAnguilla japonicaN
EMW-102Japanese seabassLateolabrax japonicusN
EMW-107Korean rockfishSebastes schlegeliN
EMW-109Large yellow croakerLarimichthys croceusN
EMW-110Largemouth black bassMicropterus salmoidesN
EMW-115Mandarin fishSiniperca chuatsiN
EMW-117Mangrove red snapperLutjanus argentimaculatusN
EMW-118Marble gobyOxyeleotris marmorataN
EMW-121MeagreArgyrosomus regiusN
EMW-122MilkfishChanos chanosN
EMW-123Mozambique tilapiaOreochromis mossambicusN
EMW-124Mrigal carpCirrhinus mrigalaN
EMW-129Nile tilapiaOreochromis niloticusN
EMW-132North African catfishClarias gariepinusN
EMW-135Orange-spotted grouperEpinephelus coioidesN
EMW-138Pacific bluefin tunaThunnus orientalisN
EMW-140PacuPiaractus mesopotamicusN
EMW-141Pangas catfishPangasius pangasiusN
EMW-142Pangas catfishes neiPangasius sppYEMW-206EMW-141
EMW-145Philippine catfishClarias batrachusN
EMW-146Pike-perchSander luciopercaN
EMW-147PirapatingaPiaractus brachypomusN
EMW-149Pond loachMisgurnus anguillicaudatusN
EMW-155Rainbow troutOncorhynchus mykissN
EMW-156Red drumSciaenops ocellatusN
EMW-164River eels neiAnguilla sppYEMW-100EMW-69
EMW-167Roho labeoLabeo rohitaN
EMW-175Sea troutSalmo truttaN
EMW-176Senegalese soleSolea senegalensisN
EMW-179Siberian sturgeonAcipenser baeriiN
EMW-181Silver barbBarbonymus gonionotusN
EMW-182Silver carpHypophthalmichthys molitrixN
EMW-183Silver perchBidyanus bidyanusN
EMW-184Silver seabreamPagrus auratusN
EMW-187SnakeheadChanna argusN
EMW-188Snakeheads(=Murrels) neiChanna sppYEMW-207EMW-207
EMW-189Snakeskin gouramiTrichogaster pectoralisN
EMW-190Snappers neiLutjanus sppYEMW-117EMW-117
EMW-192Snubnose pompanoTrachinotus blochiiN
EMW-195Southern bluefin tunaThunnus maccoyiiN
EMW-205Striped bass, hybridMorone chrysops x M. saxatilisN
EMW-206Striped catfishPangasianodon hypophthalmusN
EMW-207Striped snakeheadChanna striataN
EMW-209Sturgeons neiAcipenseridaeY
EMW-211Tambacu, hybridP. mesopotamicus x C. macropomumN
EMW-215Tilapias neiOreochromis (=Tilapia) sppYEMW-123EMW-129
EMW-216Torpedo-shaped catfishes neiClarias sppYEMW-145EMW-132
EMW-217Trouts neiSalmo sppYEMW-175EMW-21
EMW-219TurbotScophthalmus maximusN
EMW-229Wuchang breamMegalobrama amblycephalaN
EMW-230Yellow catfishPelteobagrus fulvidracoN
EMW-231Blue-Nile tilapia, hybridOreochromis aureus x O. niloticusN
EMW-232Florida pompanoTrachinotus carolinusN
EMW-233Tiger pufferfishTakifugu rubripesN
EMW-234Japanese seabreamPagrus majorN
EMW-235Obscure pufferfishTakifugu obscurusN
EMW-236Yellowtail amberjackSeriola lalandiN
EMW-237Orbicular batfishPlatax orbicularisN
EMW-238Giant grouperEpinephelus lanceolatusN
EMW-471White-spotted spinefootSiganus canaliculatusN
EMW-498Striped bassMorone saxatilisN
EMW-505Mugil sppMugil sppYEMW-76EMW-76
EMW-506PompanoTrachinotus ovatusN
EMW-508Pufferfishes neiTakifugu sppYEMW-235EMW-233
EMW-535Carassius sppCarassius sppYEMW-62EMW-634
EMW-634Prussian carpCarassius gibelioN
 

Notes.

Estimated mean weights for species are used to estimate farmed fish numbers from FAO production tonnages, using the method described by Mood et al. (2023). For categories of species comprising a single species (i.e. not a multi-species category), EMWs are based on fish weight data for the species, taking into account differences between countries where possible. For multi-species categories, EMWs are usually based on the combined range for two EMWs for related single-species categories, these being smallest and largest species in the group for which an EMW was obtained. For our convenience, EMWs have each been assigned an id number.
EMW ranges for species, which may vary between individual countries, are shown along with estimated numbers here.