Guyana
Checklist of Endemic Freshwater Fish Species
This list of freshwater fish species found exclusively in Guyana is based on the taxonomy used in Eschmeyer's Catalog of Fishes (2023). For further details on possible inaccuracies in the list see Sources & Caveats.
Fricke, R., Eschmeyer, W. N. & Van der Laan, R. (eds) 2023 Catalog of Fishes: Genera, Species, References. Version downloaded 9 February 2023 https://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp
The current version can be accessed here
An alternative 2022 list of Guyana's freshwater fishes indicating endemic species is at (ResearchGate).
Acanthocharax microlepis
(Characiformes Characidae) Bigeye Dogtooth Characin
Aphyocharacidium
melandetum (Characiformes Characidae)
Astyanax rupununi
(Characiformes Characidae) Rupununi Astyanax
Deuterodon mutator
(Characiformes Characidae) Potaro Tetra
Hemigrammus iota
(Characiformes Characidae) I-beam Tetra
Hyphessobrycon catableptus
(Characiformes Characidae) Club-fin Tetra
Hyphessobrycon eos
(Characiformes Characidae) Dawn Tetra
Hyphessobrycon minor
(Characiformes Characidae) Minor Tetra
Jupiaba mucronata
(Characiformes Characidae) One-spot Jupiaba
Tetra
Moenkhausia browni
(Characiformes Characidae)
Moenkhausia shideleri
(Characiformes Characidae) Shideler's Tetra
Parapristella aubynei
(Characiformes Characidae) Aubyne’s Characin
Phenacogaster megalosticta
(Characiformes Characidae) Bigspot Characin
Ammocryptocharax lateralis
(Characiformes Crenuchidae) Blackstripe Tropical
Darter
Characidium amaila
(Characiformes Crenuchidae) Amaila Tropical
Darter
Characidium duplicatum
(Characiformes Crenuchidae) Duplicate Tropical
Darter
Poecilocharax bovaliorum
(Characiformes Crenuchidae) Black Morpho Tetra
Skiotocharax meizon
(Characiformes Crenuchidae) Pink Tetra
Derhamia hoffmannorum
(Characiformes Lebiasinidae) Hoffmann's Derhamia
Lebiasina ardilai
(Characiformes Lebiasinidae) Ardila's Lebiasina
Nannostomus espei
(Characiformes Lebiasinidae) Barred Pencilfish
Nannostomus harrisoni
(Characiformes Lebiasinidae) Black-stripe
Pencilfish
Nannostomus minimus
(Characiformes Lebiasinidae) Least Pencilfish
Apareiodon agmatos
(Characiformes Parodontidae) Broken-line
Scrapetooth
Paramyloplus taphorni
(Characiformes Serrasalmidae) Taphorn's Catabac
Aequidens potaroensis
(Cichliformes Cichlidae) Guyana Aequidens
Geophagus crocatus
(Cichliformes Cichlidae) Red-striped Eartheater
Heros notatus (Cichliformes Cichlidae)
Ivanacara bimaculata
(Cichliformes Cichlidae) Potaro Dwarf Cichlid
Krobia petitella
(Cichliformes Cichlidae)
Mazarunia charadrica
(Cichliformes Cichlidae)
Mazarunia mazarunii
(Cichliformes Cichlidae) Mazaruni Cichlid
Mazarunia pala
(Cichliformes Cichlidae) Gold Nugget Patwa
Anablepsoides holmiae
(Cyprinodontiformes Rivulidae) Holmia
Killifish
Anablepsoides lanceolatus
(Cyprinodontiformes Rivulidae) Lancetail
Killifish
Anablepsoides mazaruni
(Cyprinodontiformes Rivulidae) Mazaruni
Killifish
Anablepsoides waimacui
(Cyprinodontiformes Rivulidae) Waimacui
Killifish
Austrofundulus rupununi
(Cyprinodontiformes Rivulidae) Rupununi
Austro
Laimosemion breviceps
(Cyprinodontiformes Rivulidae) Shorthead
Redthroat Killifish
Laimosemion mabura
(Cyprinodontiformes Rivulidae) Mabura
Redthroat Killifish
Laimosemion mahdiaense
(Cyprinodontiformes Rivulidae) Mahdia
Redthroat Killifish
Laimosemion paryagi
(Cyprinodontiformes Rivulidae) Paryag's
Redthroat Killifish
Laimosemion torrenticola
(Cyprinodontiformes Rivulidae) Torrent
Redthroat Killifish
Apteronotus leptorhynchus
(Gymnotiformes Apteronotidae) Brown Ghost
Knifefish
Sternarchorhynchus
freemani (Gymnotiformes Apteronotidae) Freeman's Tube-snouted Ghost Knifefish
Akawaio penak (Gymnotiformes Hypopomidae)
Arapaima arapaima
(Osteoglossiformes Arapaimidae)
Bunocephalus chamaizelus
(Siluriformes Aspredinidae)
Auchenipterus brevior
(Siluriformes Auchenipteridae) Short-barbel
Neckfin Catfish
Centromochlus carolae
(Siluriformes Auchenipteridae) Carol's Spinefin
Catfish
Tatia meesi (Siluriformes Auchenipteridae)
Mees' Tatia
Corydoras deweyeri
(Siluriformes Callichthyidae) Deweyer’s
Corydoras
Corydoras potaroensis
(Siluriformes Callichthyidae) Potaro Corydoras
Cetopsidium minutum
(Siluriformes Cetopsidae)
Cetopsidium roae
(Siluriformes Cetopsidae) Rosemary's Baby Whale
Catfish
Cetopsidium soniae
(Siluriformes Cetopsidae) Sonia's Baby Whale
Catfish
Denticetopsis iwokrama
(Siluriformes Cetopsidae)
Denticetopsis macilenta
(Siluriformes Cetopsidae)
Brachyglanis frenata
(Siluriformes Heptapteridae) Bridled
Three-Barbeled Catfish
Brachyglanis melas
(Siluriformes Heptapteridae)
Brachyglanis phalacra
(Siluriformes Heptapteridae) Bald-Headed Three-Barbeled
Catfish
Myoglanis potaroensis
(Siluriformes Heptapteridae) Speartail
Three-Barbeled Catfish
Pimelodella altipinnis
(Siluriformes Heptapteridae) High-Fin
Three-Barbeled Catfish
Pimelodella wesselii
(Siluriformes Heptapteridae) Wessel's Three-Barbeled
Catfish
Ancistrus kellerae
(Siluriformes Loricariidae) Keller's
Bristlenose Pleco
Ancistrus leucostictus
(Siluriformes Loricariidae) White-spotted
Bristlenose Pleco
Ancistrus lithurgicus
(Siluriformes Loricariidae) Stone Bristlenose
Pleco
Corymbophanes ameliae
(Siluriformes Loricariidae) Amelia's Shield
Pleco
Corymbophanes andersoni
(Siluriformes Loricariidae) Anderson's Shield
Pleco
Corymbophanes kaiei
(Siluriformes Loricariidae) Kaie's Shield Pleco
Hypancistrus margaritatus
(Siluriformes Loricariidae) Pearlspotted Angel
Pleco
Hypostomus hemiurus
(Siluriformes Loricariidae) Half-tailed Pleco
Lithogenes villosus
(Siluriformes Loricariidae) Stoneborn Shield
Pleco
Loricariichthys microdon
(Siluriformes Loricariidae) Small-Toothed Whiptail
Pleco
Nannoxyropsis ephippia
(Siluriformes Loricariidae) Saddle-Backed Dwarf
Pleco
Neblinichthys
brevibracchium (Siluriformes Loricariidae) Short-Finned Punk Pleco
Neblinichthys echinasus
(Siluriformes Loricariidae) Prickly-Snout Punk
Pleco
Paulasquama callis
(Siluriformes Loricariidae) Cobblestone Pleco
Peckoltia cavatica
(Siluriformes Loricariidae) Dusky Womline Pleco
Pseudacanthicus leopardus
(Siluriformes Loricariidae) Leopard Cactus
Pleco
Pseudancistrus guentheri
(Siluriformes Loricariidae) Guenther's Pleco
Pseudancistrus nigrescens
(Siluriformes Loricariidae) Head-spotted Stream
Pleco
Rhinotocinclus collinsae
(Siluriformes Loricariidae) Collins' Dwarf
Pleco
Rhinotocinclus hardmani
(Siluriformes Loricariidae) Hardman's Dwarf
Pleco
Sturisoma monopelte
(Siluriformes Loricariidae) Shielded Whiptail
Pleco
Yaluwak primus
(Siluriformes Loricariidae) Yaluwak