Listed below are several pages which are organized to scientifically categorize freshwater fishes. Click on the classification to go to the dedicated page of said classification.
(Note: "Number of Species" Includes marine species.)
Note as well that on each species page, if a classification is labeled as "Brackish, Marine, Fresh" or any of its counterpart labels, this does not mean that every fish in the taxa can live in all three of these waters. This simply means the taxa consists of different species that live in those waters.)
Number of Species: 400
Freshwater Examples: Bluntnosed Sawtooth Pellonuline, Freshwater Anchovy, Tanganyikan Sardine
Number of Species: 51
Freshwater Examples: Humphead Glassfish, Indian Glassfish, Macleay's glassfish
Beloniformes, Bowfins and Gars
Number of Species: 272
Freshwater Examples: Bowfin, Needlenose Gar, Alligator Gar
Number of Species: 13
Freshwater Examples: Ornate Bichir, Reedfish, Senegal Bichir
Number of Species: 900
Freshwater Examples: Trichonis blenny, Freshwater Blenny
Cardinalfishes and Nurseryfishes
Number of Species: 354
Freshwater Examples: Indian Humphead, Mouth Almighty, Nurseryfish
Number of Species: 3001
Freshwater Examples: Amur Carp, Goldfish, Redfin Shark, Zebra Danio
Number of Species: 3000
Freshwater Examples: Blue Catfish, Common Plecostomus, Panda Corydoras, Redtail Catfish
Number of Species: 290
Freshwater Examples: Flagtail Prochilodus, Redbreast Sunfish, Smallmouth Bass
Number of Species: 2000
Freshwater Examples: Neon Tetra, Pinktail Chalceu, Red-bellied Pacu, Skirt Tetra
Number of Species: 1702
Freshwater Examples: Blue Discus, Bumblebee Cichlid, Common Angelfish, Keyhole Cichlid, Tiger Oscar Cichlid
Number of Species: 180
Freshwater Examples: Mexican Clingfish, Penisular Clingfish
Number of Species: 555
Freshwater Examples: Burbot
Number of Species: 153
Freshwater Examples: Chinese Darter Dragonet, Mekong Delta Dragonet, Tonlesapia tsukawakii
Number of Species: 800
Freshwater Examples: Catathyridium jenynsii, Hypoclinemus mentalis, Trinectes hubbsbollinger
Number of Species: 53
Freshwater Examples: Arthurs Paragalaxias, Mountain Galaxias, Western Mudminnow
Number of Species: 8
Freshwater Examples: Difficult to determine, will be updated
Number of Species: 2211
Freshwater Examples: Chinese Sleeper, Dark Sleeper, Typhleotris madagascariensis
Number of Species: 117
Freshwater Examples: Brook Lamprey, European River Lamprey
Number of Species: 550
Freshwater Examples: Dwarf Gourami, Leopard Bushfish, Rainbow Snakehead, Siamese Fighting Fish
Number of Species: 1
Freshwater Examples: Salamanderfish
Number of Species: 1249
Freshwater Examples: Clown Loach, Dojo Loach, Kuhli Loach, Zebra Loach
Number of Species: 8
Freshwater Examples: Gilled Lungfish, Spotted lungfish, West African Lungfish
Number of Species: 50
Freshwater Examples: Grasseichthys gabonensis, Naked Shellear
Number of Species: 5
Freshwater Examples: Goldeye, Mooneye
Number of Species: 78
Freshwater Examples: Burmese Mullet, Mountain Mullet, Pinkeye Mullet
Number of Species: 245
Freshwater Examples: Aba, Asian Arowana, PirarucĂș, Silver Arowana
Number of Species: 380
Freshwater Examples: Lucifuga simile
Number of Species: Debated Upon, anywhere from 6000 to 10000
Freshwater Examples: Brook Stickleback, Torrentfish
Number of Species: 10
Freshwater Examples: Alabama Cavefish, Swampfish, Trout-perch
Number of Species: 1000
Freshwater Examples: Andaman Pipefish, Freshwater Pipefish, Short-tailed Pipefish
Number of Species: 12
Freshwater Examples: Eastern Mudminnow, Northern Pike, Olympic Mudminnow
Number of Species: 349
Freshwater Examples: Dwarf Pufferfish, Fahaka Pufferfish, Mbu Pufferfish, South American Pufferfish
Number of Species: 600
Freshwater Examples: Ocellate River Stingray, Porcupine River Stingray, South American Freshwater Stingray
Number of Species: 500
Freshwater Examples: Bull Shark, Ganges Shark
Number of Species: 70
Freshwater Examples: Brook Trout, Pink Salmon, Sockeye Salmon
Number of Species: Debated upon, anywhere from 30-1400
Freshwater Examples: Big Baikal Oilfish, Luna Lionfish, Mottled Sculpin
Number of Species: 354
Species Examples: Boesemani Rainbowfish, Honey Blue-eye, Neon Rainbowfish
Number of Species: 134
Freshwater Examples: Banded Knifefish, Black Ghost Knifefish, Electric Eel, Glass Knifefish
Number of Species: 28
Freshwater Examples: American Paddlefish, Dabry's Sturgeon, Lake Sturgeon
Number of Species: 96
Freshwater Examples: Bengal Eel, Fire Eel, Indostomus crocodiles, Tire-track Eel
Number of Species: 1500
Freshwater Examples: African Scat, Spotbaned Scat, Spotted Scat
Number of Species: 83
Freshwater Examples: Thalassophryne amazonica, Daector gerringi
Number of Species: 1400
Freshwater Examples: Dark-edged Splitfin, Elegant Killifish, Endler's Livebearer, Guppy, Largescale Foureyes, Molly
Number of Species: 800
Freshwater Examples: American Eel, European Eel, Japanese Eel, Mottled Eel
Number of Species: 93
Freshwater Examples: Eulacheon, Protosalanx chinensis
Incertae sedis
For species whose relationships to members of defined taxons are unknown.