Fish Species of Wisconsin (USA)

Northern pike

Esox lucius

LC 💧 Freshwater

Northern plains killifish

Fundulus kansae

LC 💧 Freshwater

Northern red snapper

Lutjanus campechanus

VU 🌊 Marine

Northern sennet

Sphyraena borealis

LC 🌊 Marine

Northern studfish

Fundulus catenatus

LC 💧 Freshwater

Notchlip redhorse

Moxostoma collapsum

LC 💧 Freshwater

Ocean sunfish

Mola mola

VU 🌊 Marine

Ocean triggerfish

Canthidermis sufflamen

LC 🌊 Marine

Oceanic puffer

Lagocephalus lagocephalus

LC 🌊 Marine

Oceanic two-wing flyingfish

Exocoetus obtusirostris

LC 🌊 Marine

Ocellated frogfish

Fowlerichthys ocellatus

LC 🌊 Marine

Offshore lizardfish

Synodus poeyi

LC 🌊 Marine

Offshore silver hake

Merluccius albidus

LC 🌊 Marine

Ogcocephalus Cubifrons

Ogcocephalus cubifrons

LC 🌊 Marine

Ohrid trout

Salmo letnica

EN 💧 Freshwater

Oilfish

Ruvettus pretiosus

LC 🌊 Marine

Olympic mudminnow

Novumbra hubbsi

LC 💧 Freshwater

Omosudid

Omosudis lowii

LC 🌊 Marine

Opossum pipefish

Microphis lineatus

🔄 Diadromous

Orange filefish

Aluterus schoepfii

LC 🌊 Marine

Orangeback bass

Serranus annularis

LC 🌊 Marine

Orangefin madtom

Noturus gilberti

EN 💧 Freshwater

Orbicular batfish

Platax orbicularis

LC 🌊 Marine

Orinoco sailfin catfish

Pterygoplichthys multiradiatus

LC 💧 Freshwater

Oscar

Astronotus ocellatus

LC 💧 Freshwater

Ozark bass

Ambloplites constellatus

LC 💧 Freshwater

Ozark minnow

Notropis nubilus

LC 💧 Freshwater

Pacific blackchin

Scopelengys tristis

LC 🌊 Marine

Pacific fanfish

Pteraclis aesticola

LC 🌊 Marine

Pacific fat sleeper

Dormitator latifrons

LC 🔄 Diadromous

Pacific hatchet fish

Argyropelecus affinis

LC 🌊 Marine

Pacific portholefish

Diplophos taenia

LC 🌊 Marine

Pahrump poolfish

Empetrichthys latos

CR 💧 Freshwater

Pale cardinalfish

Apogon planifrons

LC 🌊 Marine

Pale threadtail snipe eel

Nemichthys curvirostris

LC 🌊 Marine

Paleback goby

Gobulus myersi

LC 🌊 Marine

Pallid goby

Coryphopterus eidolon

VU 🌊 Marine

Pallid shiner

Hybopsis amnis

LC 💧 Freshwater

Pancake batfish

Halieutichthys aculeatus

LC 🌊 Marine

Paradisefish

Macropodus opercularis

LC 💧 Freshwater

Parin's spinyfish

Diretmichthys parini

LC 🌊 Marine

Pawnee dragonfish

Bathophilus pawneei

LC 🌊 Marine

Peacock eel

Macrognathus siamensis

LC 💧 Freshwater

Peacock hind

Cephalopholis argus

LC 🌊 Marine

Peamouth

Mylocheilus caurinus

LC 💧 Freshwater

Pearl gourami

Trichopodus leerii

NT 💧 Freshwater

Pearlfish

Carapus bermudensis

LC 🌊 Marine

Pearly lanternfish

Myctophum nitidulum

LC 🌊 Marine