This is a list of the endemic fish species recorded in Papua New Guinea.[1][2]
| Scientific name | Common name | Family | Habitat | Notes |
|---|---|---|---|---|
| Cheroscorpaena tridactyla | Apistidae | Marine | ||
| Apogon dammermani | Apogonidae | Marine | May or may not be endemic (FishBase). | |
| Apogon novaeguineae | Apogonidae | Marine | May or may not be endemic (FishBase). | |
| Apogon photogaster | Apogonidae | Marine | ||
| Ecsenius collettei | Collette's blenny | Blenniidae | Marine | |
| Ecsenius taeniatus | Blenniidae | Marine | ||
| Meiacanthus limbatus | Blenniidae | Marine | ||
| Omobranchus robertsi | Blenniidae | Marine | ||
| Omox lupus | Blenniidae | Marine | May or may not be endemic (FishBase). | |
| Parabrosmolus novaeguineae | Bythitidae | Marine | ||
| Callionymus colini | Tiny New Guinea longtail dragonet | Callionymidae | Marine | |
| Callionymus zythros | Callionymidae | Marine | ||
| Synchiropus claudiae | Callionymidae | Marine | May or may not be endemic (FishBase). | |
| Trimma rubromaculatus | Gobiidae | Marine | May or may not be endemic (FishBase). | |
| Vanderhorstia flavilineata | Gobiidae | Marine | ||
| Cirrhilabrus condei | Labridae | Marine | ||
| Hoplolatilus pohle | Malacanthidae | Marine | ||
| Moringua penni | Penn's thrush eel | Moringuidae | Marine | May or may not be endemic (FishBase). |
| Callechelys papulosa | Ophichthidae | Marine | May or may not be endemic (FishBase). | |
| Stalix dicra | Opistognathidae | Marine | ||
| Stalix eremia | Opistognathidae | Marine | ||
| Nematops microstoma | Small-mouth righteye flounder | Pleuronectidae | Marine | May or may not be endemic (FishBase). |
| Chrysiptera cymatilis | Pomacentridae | Marine | ||
| Chrysiptera niger | Black damselfish | Pomacentridae | Marine | May or may not be endemic (FishBase). |
| Chrysiptera sinclairi | Sinclair's damselfish | Pomacentridae | Marine | May or may not be endemic (FishBase). |
| Neopomacentrus aquadulcis | Pomacentridae | Marine | ||
| Pomacentrus albimaculus | Whitespot damsel | Pomacentridae | Marine | May or may not be endemic (FishBase). |
| Pomacentrus colini | Colin's damsel | Pomacentridae | Marine | |
| Pseudochromis ephippiatus | Pseudochromidae | Marine | ||
| Pseudochromis marginatus | Pseudochromidae | Marine | ||
| Pseudomugil majusculus | Cape blue-eye | Pseudomugilidae | Marine | |
| Atrobucca adusta | Scorched croaker | Sciaenidae | Marine | |
| Liopropoma incomptum | Serranidae | Marine | ||
| Rabaulichthys altipinnis | Sailfin anthias | Serranidae | Marine | May or may not be endemic (FishBase). |
| Aseraggodes persimilis | Ocellated sole | Soleidae | Marine | |
| Brachirus dicholepis | Soleidae | Marine | ||
| Gogolia filewoodi | Sailback houndshark | Triakidae | Marine | |
| Urolophus armatus | New Ireland stingaree | Urolophidae | Marine | |
| Rhabdoblennius papuensis | Blenniidae | Marine | ||
| Ungusurculus collettei | Bythitidae | Marine | ||
| Lepadicyathus mendeleevi | gobiesocidae | Marine | ||
| Amblyeleotris neumanni | Gobiidae | Marine | ||
| Ctenogobiops phaeostictus | Gobiidae | Marine | ||
| Tryssogobius quinquespinus | Gobiidae | Marine | ||
| Vanderhorstia belloides | Gobiidae | Marine | ||
| Parapercis vittafrons | Pinguipedidae | Marine | ||
| Chaetodontoplus vanderloosi | Pomacanthidae | Marine | ||
| Ptereleotris crossogenion | Ptereleotridae | Marine | ||
| Aseraggodes chapleaui | Soleidae | Marine | ||
| Tetracentrum apogonoides | Four-spined glass perchlet | Ambassidae | Freshwater | |
| Tetracentrum caudovittatus | Kokoda glass perchlet | Ambassidae | Freshwater | |
| Tetracentrum honessi | Honess' glass perchlet | Ambassidae | Freshwater | |
| Glossamia abo | Apogonidae | Freshwater | ||
| Glossamia narindica | Slender mouth almighty | Apogonidae | Freshwater | |
| Brustiarius nox | Comb-gilled catfish | Ariidae | Freshwater | |
| Cochlefelis danielsi | Daniel's catfish | Ariidae | Freshwater | |
| Nemapteryx augusta | Short-barbelled catfish | Ariidae | Freshwater | |
| Neoarius coatesi | Coates' catfish | Ariidae | Freshwater | |
| Neoarius taylori | Taylor's catfish | Ariidae | Freshwater | |
| Pachyula crassilabris | Thick-lipped catfish | Ariidae | Freshwater | |
| Craterocephalus kailolae | Kailola's hardyhead | Atherinidae | Freshwater | |
| Craterocephalus lacustris | Kutubu freshwater hardyhead | Atherinidae | Freshwater | |
| Craterocephalus pimatuae | Pima hardyhead | Atherinidae | Freshwater | |
| Allomogurnda flavimarginata | Eleotridae | Freshwater | ||
| Allomogurnda hoesei | Eleotridae | Freshwater | ||
| Allomogurnda insularis | Eleotridae | Freshwater | ||
| Allomogurnda landfordi | Eleotridae | Freshwater | ||
| Allomogurnda montana | Eleotridae | Freshwater | ||
| Allomogurnda papua | Eleotridae | Freshwater | ||
| Eleotris aquadulcis | Freshwater gudgeon | Eleotridae | Freshwater | |
| Mogurnda furva | Black mogurnda | Eleotridae | Freshwater | |
| Mogurnda kutubuensis | Lake Kutuba mogurnda | Eleotridae | Freshwater | |
| Mogurnda lineata | Kokoda mogurnda | Eleotridae | Freshwater | |
| Mogurnda maccuneae | Eleotridae | Freshwater | ||
| Mogurnda malsmithi | Eleotridae | Freshwater | ||
| Mogurnda mosa | Mosa mogurnda | Eleotridae | Freshwater | |
| Mogurnda orientalis | Eastern mogurnda | Eleotridae | Freshwater | |
| Mogurnda pulchra | Moresby mogurnda | Eleotridae | Freshwater | |
| Mogurnda spilota | Blotched mogurnda | Eleotridae | Freshwater | |
| Mogurnda variegata | Variegated gudgeon | Eleotridae | Freshwater | |
| Mogurnda vitta | Striped mogurnda | Eleotridae | Freshwater | |
| Oxyeleotris caeca | Eleotridae | Freshwater | ||
| Tateurndina ocellicauda | Peacock gudgeon | Eleotridae | Freshwater | |
| Thryssa rastrosa | Fly River thryssa | Engraulidae | Freshwater | |
| Boleophthalmus poti | Gobiidae | Freshwater | ||
| Glossogobius asaro | Gobiidae | Freshwater | ||
| Glossogobius coatesi | Coates' goby | Gobiidae | Freshwater | |
| Glossogobius macrocephalus | Gobiidae | Freshwater | ||
| Glossogobius multipapillus | Gobiidae | Freshwater | ||
| Glossogobius muscorum | Gobiidae | Freshwater | ||
| Glossogobius torrentis | White water goby | Gobiidae | Freshwater | |
| Gymnoamblyopus novaeguineae | Gobiidae | Freshwater | ||
| Lentipes watsoni | Gobiidae | Freshwater | ||
| Mugilogobius fusculus | Obscure goby | Gobiidae | Freshwater | |
| Sicyopterus ocellaris | Gobiidae | Freshwater | ||
| Stenogobius alleni | Gobiidae | Freshwater | ||
| Stenogobius watsoni | Gobiidae | Freshwater | ||
| Stiphodon larson | Gobiidae | Freshwater | ||
| Chilatherina axelrodi | Axelrod's rainbowfish | Melanotaeniidae | Freshwater | |
| Chilatherina bulolo | Bulolo rainbowfish | Melanotaeniidae | Freshwater | |
| Chilatherina campsi | Highland rainbowfish | Melanotaeniidae | Freshwater | |
| Chilatherina pagwiensis | Pagwi rainbowfish | Melanotaeniidae | Freshwater | |
| Glossolepis kabia | Sepik rainbowfish | Melanotaeniidae | Freshwater | |
| Glossolepis maculosus | Spotted rainbowfish | Melanotaeniidae | Freshwater | |
| Glossolepis ramuensis | Ramu rainbowfish | Melanotaeniidae | Freshwater | |
| Glossolepis wanamensis | Lake Wanam rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia caerulea | Blue rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia herbertaxelrodi | Lake Tebera rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia iris | Strickland rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia lacustris | Lake Kutubu rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia monticola | Mountain rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia mubiensis | Mubi rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia oktediensis | Oktedi rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia papuae | Papuan rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia parkinsoni | Parkinson's rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia pimaensis | Pima River rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia sexlineata | Fly River rainbowfish | Melanotaeniidae | Freshwater | |
| Melanotaenia sylvatica | Forest rainbowfish | Melanotaeniidae | Freshwater | |
| Neosilurus coatesi | Plotosidae | Freshwater | ||
| Neosilurus gjellerupi | Northern tandan | Plotosidae | Freshwater | |
| Oloplotosus luteus | Pale yellow tandan | Plotosidae | Freshwater | |
| Oloplotosus torobo | Kutubu tandan | Plotosidae | Freshwater | |
| Kiunga ballochi | Glass blue-eye | Pseudomugilidae | Freshwater | |
| Kiunga bleheri | Bleher's blue-eye | Pseudomugilidae | Freshwater | |
| Popondichthys furcatus | Forktail blue-eye | Pseudomugilidae | Freshwater | |
| Pseudomugil connieae | Popondetta blue-eye | Pseudomugilidae | Freshwater | |
| Pseudomugil majusculus | Cape blue-eye | Pseudomugilidae | Freshwater | |
| Leptachirus bensbach | Bensbach River sole | Soleidae | Freshwater | |
| Leptachirus kikori | Kikori River sole | Soleidae | Freshwater | |
| Leptachirus robertsi | Robert's sole | Soleidae | Freshwater | |
| Microphis spinachioides | Spinach pipefish | Syngnathidae | Freshwater | |
| Amniataba affinis | Tiger grunter | Terapontidae | Freshwater | |
| Hephaestus adamsoni | Adamson's grunter | Terapontidae | Freshwater | |
| Hephaestus komaensis | Terapontidae | Freshwater | ||
| Hephaestus raymondi | Raymond's grunter | Terapontidae | Freshwater | |
| Hephaestus trimaculatus | Threespot grunter | Terapontidae | Freshwater | |
| Zenarchopterus robertsi | Robert's river garfish | Zenarchopteridae | Freshwater |