Freshwater aquarium fish: N
All freshwater fish whose common name starts with N, in alphabetical order. Each card links to its care guide.
48 species and 3 varieties
Nagy's licorice gourami
Parosphromenus nagyi
Freshwater1.4 in (3.5 cm) · 5 gal (20 L)72–81°F (22–27°C)
Nain dwarf cory
Gastrodermus nanus
Freshwater1.8 in (4.5 cm) · 16 gal (60 L)72–79°F (22–26°C)
Nambiquara royal tetra
Inpaichthys nambiquara
Freshwater1.3 in (3.4 cm) · 14 gal (54 L)73–81°F (23–27°C)
Nan River loach
Hemimyzon nanensis
Freshwater2.8 in (7 cm) · 24 gal (90 L)64–75°F (18–24°C)
Nano cory
Gastrodermus gracilis
Freshwater1.4 in (3.5 cm) · 12 gal (45 L)72–79°F (22–26°C)
Napo cory
Gastrodermus napoensis
Freshwater2 in (5 cm) · 16 gal (60 L)72–79°F (22–26°C)
Napo tetra
Moenkhausia naponis
Freshwater2.6 in (6.5 cm) · 20 gal (75 L)73–81°F (23–27°C)
Narayan barb
Pethia narayani
Freshwater1.8 in (4.5 cm) · 14 gal (54 L)68–77°F (20–25°C)
Narrow hatchetfish
Triportheus angulatus
Freshwater9.8 in (25 cm) · 79 gal (300 L)73–82°F (23–28°C)
Narrow-fronted tandan
Neosilurus ater
Freshwater17.7 in (45 cm) · 119 gal (450 L)70–82°F (21–28°C)
Nasuta featherfin
Ophthalmotilapia nasuta
Freshwater7.1 in (18 cm) · 79 gal (300 L)75–81°F (24–27°C)
Neambi eartheater
Geophagus neambi
Freshwater9.4 in (24 cm) · 119 gal (450 L)77–84°F (25–29°C)
Negodagua tetra
Hyphessobrycon negodagua
Freshwater1.3 in (3.4 cm) · 15 gal (55 L)68–79°F (20–26°C)
Neon golden-stripe shark
Sarcocheilichthys parvus
Freshwater3.5 in (9 cm) · 30 gal (112 L)61–75°F (16–24°C)
Neon rainbowfish
Melanotaenia praecox
Freshwater3.1 in (8 cm) · 29 gal (110 L)73–82°F (23–28°C)
Neon tetra
Paracheirodon innesi
Freshwater1.5 in (3.8 cm) · 11 gal (40 L)70–77°F (21–25°C)3 varieties
New Guinea blue-eye
Pseudomugil novaeguineae
Freshwater1.8 in (4.5 cm) · 15 gal (55 L)79–86°F (26–30°C)
New Guinea rainbowfish
Melanotaenia affinis
Freshwater4.7 in (12 cm) · 30 gal (115 L)68–86°F (20–30°C)
New Guinea tiger perch
Datnioides campbelli
FreshwaterBrackish12.6 in (32 cm) · 159 gal (600 L)75–84°F (24–29°C)
Ngege tilapia
Oreochromis esculentus
Freshwater15.7 in (40 cm) · 119 gal (450 L)73–82°F (23–28°C)
Nguti cichlid
Etia nguti
Freshwater6.3 in (16 cm) · 66 gal (250 L)73–81°F (23–27°C)
Nicaragua cichlid
Hypsophrys nicaraguensis
Freshwater9.8 in (25 cm) · 75 gal (285 L)73–82°F (23–28°C)
Niger Delta bushfish
Ctenopoma nebulosum
Freshwater4.7 in (12 cm) · 42 gal (160 L)73–82°F (23–28°C)
Niger tetra
Arnoldichthys spilopterus
Freshwater3.9 in (10 cm) · 50 gal (190 L)75–81°F (24–27°C)
Niger yellow Congo tetra
Alestopetersius smykalai
Freshwater2.8 in (7 cm) · 29 gal (110 L)73–81°F (23–27°C)
Nigerian yellow line tetra
Rhabdalestes septentrionalis
Freshwater2.8 in (7 cm) · 21 gal (80 L)73–82°F (23–28°C)
Night aulonocara
Aulonocara hueseri
Freshwater3.9 in (10 cm) · 63 gal (240 L)75–81°F (24–27°C)
Nigrodorsalis benitochromis
Benitochromis nigrodorsalis
Freshwater3.7 in (9.5 cm) · 42 gal (160 L)73–81°F (23–27°C)
Nigrofasciatus pelmatochromis
Pelmatochromis nigrofasciatus
Freshwater5.5 in (14 cm) · 66 gal (250 L)73–81°F (23–27°C)
Nijssen's cory
Gastrodermus nijsseni
Freshwater1.8 in (4.5 cm) · 16 gal (60 L)72–79°F (22–26°C)
Nile bichir
Polypterus bichir
Freshwater27.6 in (70 cm) · 185 gal (700 L)77–84°F (25–29°C)
Nile bottlenose mormyrid
Mormyrus kannume
Freshwater35.4 in (90 cm) · 185 gal (700 L)75–82°F (24–28°C)
Nilgiri loach
Schistura nilgiriensis
Freshwater2.4 in (6 cm) · 20 gal (75 L)64–75°F (18–24°C)
Ninescale rasbora
Rasbora ennealepis
Freshwater2.2 in (5.5 cm) · 20 gal (75 L)72–81°F (22–27°C)
Ninja tatia
Centromochlus musaicus
Freshwater2.4 in (6 cm) · 21 gal (80 L)73–82°F (23–28°C)
Noboli distichodus
Distichodus noboli
Freshwater7.5 in (19 cm) · 40 gal (150 L)73–82°F (23–28°C)
Nocturnal panaqolus
Panaqolus nocturnus
Freshwater4.7 in (12 cm) · 30 gal (112 L)75–84°F (24–29°C)
Norbert's dwarf cichlid
Apistogramma norberti
Freshwater2 in (5 cm) · 16 gal (60 L)75–82°F (24–28°C)
Norman's lampeye
Poropanchax normani
Freshwater1.6 in (4 cm) · 20 gal (75 L)72–79°F (22–26°C)
Northern blue melanochromis
Melanochromis kaskazini
Freshwater5.1 in (13 cm) · 66 gal (250 L)75–82°F (24–28°C)
Northern longnose cory
Corydoras septentrionalis
Freshwater2.4 in (6 cm) · 20 gal (75 L)75–82°F (24–28°C)
Northern mountain swordtail
Xiphophorus nezahualcoyotl
Freshwater3.5 in (9 cm) · 29 gal (110 L)68–79°F (20–26°C)
Northern studfish
Fundulus catenatus
Freshwater5.9 in (15 cm) · 37 gal (140 L)59–77°F (15–25°C)
Notidanos tetra
Hyphessobrycon notidanos
Freshwater1.4 in (3.5 cm) · 15 gal (55 L)72–81°F (22–27°C)
Nototaenia lampeye
Procatopus nototaenia
Freshwater2.4 in (6 cm) · 20 gal (75 L)72–79°F (22–26°C)
Nsess cichlid
Stomatepia mariae
Freshwater5.5 in (14 cm) · 66 gal (250 L)73–81°F (23–27°C)Nuluhon betta
Betta nuluhon
Freshwater2.5 in (6.3 cm) · 16 gal (60 L)72–79°F (22–26°C)
Nurse tetra
Brachyalestes nurse
Freshwater9.8 in (25 cm) · 106 gal (400 L)73–82°F (23–28°C)
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