SpeciesKnotsGuides

Fish of Ireland

Countless lakes, short lively rivers and an ocean that never freezes: Ireland owes its reputation as a fishing destination to a rare mix of mildness and abundance.

59 species documented

The oceanic climate moderates everything. Winters stay mild and summers cool, which keeps water within a favourable temperature band for much of the year — where countries at similar latitudes see their waters freeze or overheat. The season is long, with few genuinely dead periods.

The country is covered in loughs, often shallow and rich, linked by short rivers. That layout favours stillwater species and migratory fish, which have only a few tens of kilometres to travel between the sea and their spawning grounds.

The west coast, fully exposed to the Atlantic, offers rock that drops away quickly and shore fishing known for its variety. It is also the frontage most subject to swell, and the sea state often decides whether the trip happens at all.

Saltwater50

Freshwater9

Species list

NameScientific nameMax sizeBest months
AlbacoreThunnus alalunga140 cmMar–Sep
American plaiceHippoglossoides platessoides83 cmMay–Oct
Atlantic bonitoSarda sarda91.4 cmMar–Nov
Atlantic codGadus morhua200 cmOct–Apr
Atlantic horse mackerelTrachurus trachurus70 cmJun–Nov
Atlantic mackerelScomber scombrus60 cmApr–Sep
Atlantic pomfretBrama brama100 cmSep–Feb
Atlantic salmonSalmo salar150 cmMar–Nov
Bigeye tunaThunnus obesus250 cmSep–Feb
Black seabreamSpondyliosoma cantharus60 cmMar–Nov
Blue sharkPrionace glauca400 cmJun–Nov
BrillScophthalmus rhombus75 cmApr–Oct
Brown troutSalmo trutta fario60 cmApr–May
Bullet tunaAuxis rochei50 cmMar–Nov
Common dabLimanda limanda40 cmMar–Nov
Common daceLeuciscus leuciscus40 cmMar–Oct
Common soleSolea solea70 cmMar–Nov
European congerConger conger300 cmJun–Nov
European eelAnguilla anguilla130 cmMar–Nov
European flounderPlatichthys flesus60 cmMar–Nov
European hakeMerluccius merluccius140 cmMar–Nov
European perchPerca fluviatilis50 cmSep–Oct
European plaicePleuronectes platessa100 cmMar–Oct
European seabassDicentrarchus labrax103 cmJun–Oct
European SmeltOsmerus eperlanus30 cmSep–Apr
Freshwater breamAbramis brama82 cmApr–Oct
Frigate tunaAuxis thazard65 cmYear-round
HaddockMelanogrammus aeglefinus112 cmSep–Apr
John DoryZeus faber90 cmMar–Nov
Lemon soleMicrostomus kitt65 cmApr–Oct
Lesser spotted dogfishScyliorhinus canicula100 cmMar–Nov
LingMolva molva200 cmYear-round
MegrimLepidorhombus whiffiagonis60 cmApr–Nov
Northern pikeEsox lucius137 cmSep–Nov
NursehoundScyliorhinus stellaris170 cmMar–Nov
OpahLampris guttatus101 cmMar–May, Sep–Nov
Piked dogfishSqualus acanthias160 cmSep–May
PilotfishNaucrates ductor70 cmJun–Nov
PollackPollachius pollachius130 cmSep–Apr
Poor codTrisopterus minutus40 cmMar–Nov
PorbeagleLamna nasus350 cmMar–Nov
PoutingTrisopterus luscus46 cmMar–Nov
Rainbow troutOncorhynchus mykiss123 cmMar–Nov
RoachRutilus rutilus50 cmMar–Oct
RuddScardinius erythrophthalmus45 cmMar–Nov
SaithePollachius virens130 cmSep–May
Shortfin makoIsurus oxyrinchus445 cmMar–Nov
Skipjack tunaKatsuwonus pelamis110 cmMar–Nov
Smooth-houndMustelus mustelus200 cmMar–Nov
Starry smooth-houndMustelus asterias154 cmMar–Nov
SwordfishXiphias gladius455 cmMar–Nov
TenchTinca tinca60 cmJul–Aug
Thicklip grey mulletChelon labrosus75 cmYear-round
Tope sharkGaleorhinus galeus193 cmMar–Nov
TurbotScophthalmus maximus100 cmApr–Oct
WahooAcanthocybium solandri250 cmMar–Aug
WhitingMerlangius merlangus91.5 cmOct–Apr
WreckfishPolyprion americanus210 cmMar–Nov
Yellowfin tunaThunnus albacares239 cmJun–Aug