Learn about different species of freshwater fish, including popular breeds like bettas, guppies and catfish.
Scarlet badis dario dario
Scarlet Badis: Fish Species Profile
Bubble Eye Goldfish
Bubble Eye Goldfish: Fish Species Profile
Tank school of goldfish
12 Types of Goldfish: From Comets To Fantails
Two fan tail goldfish in an aquarium
Fantail Goldfish: Fish Species Profile
Tank full of Boesemani rainbow fish and bala shark
20 Colorful Species of Rainbow Fish
Skunk Cory
Skunk Cory: Fish Species Profile
Orange and white black-spotted fish swimming in aquarium
22 Small Fish for Your Freshwater Aquarium
Red tail catfish
Can You Keep a Catfish as a Pet?
Bright blue and pink beta fish swimming in fresh-water tank closeup
Low-Maintenance Freshwater Fish for Beginners
Harlequin rasbora fish with yellow and black scales swimming closeup
Harlequin Rasbora (Red Rasbora) Fish Breed Profile
Neon tetra fish with aqua blue stripe and red tail closeup
Neon Tetra: Fish Species Profile
cold water fish illustration
11 Top Fish Species for Cold Freshwater Aquariums
Bristlenose Catfish
Bristlenose Pleco Fish Species Profile
Platy fish with variegated pattern of purple and yellow glittery scales
Varieties of Platy Fish (Xiphophorus spp.)
Guppy fish with orange fins swimming in tank
Guppy Fish Species Profile
Gold barb fish swimming with gold and black-spotted scales closeup
Barb: Fish Species Profile
Silver and green striped angelfish swimming in tank with underwater foliage
10 Best Angelfish for Freshwater Aquariums
Betta fish with vibrant blue-purple and black scales swimming
Betta (Siamese Fighting Fish) Species Profile
Cory catfish swimming in aquarium tank with white pebbles
7 Cory Catfish Species for Your Aquarium Tank
Gold Barb - Puntius semifasciolatus
Gold (Chinese) Barb Fish Species Profile
Yellow and black 3 spot gourami fish swimming
Gourami Species
Illustration of the lifespan of popular aquarium fish
Average Lifespans of Different Aquarium Fish Species
Gourami fish with blue and orange striped scales swimming
Care and Breeding of Gourami Fish
White cloud mountain minnow fish with gray scales and orange fins closeup
White Cloud Mountain Minnow Fish Species Profile
Neon Tetras in Planted Fish Tank
Which Freshwater Fish Species Are Best for Heated Tanks?
Silver scaled goldfish swimming in tank closeup
15 Classic Goldfish Names
Pompadour fish with white spots on red and yellow scales and fins
Symphysodon Discus - Pompadour Fish
Pearl Danio, Danio albolineatus fish
Pearl Danio Fish Species Profile
How to Breed Egg-Scatterer Tropical Fish
How to Breed Egg-Scatterer Tropical Fish
Clown loach
Clown Loach Fish Species Profile
Stunning red killifish swimming in an aquarium.
Guide to Killifish
Butterflyfish swimming above coral in an aquarium
Methylene Blue
Swordtail fish profile
Swordtail Fish Species Profile
Silver and black striped cichlid fish swimming in aquarium
Cichlids, a Large Family of Diverse Aquatic Life Spanning the Globe
Shubunkin goldfish in a tank
Shubunkin: Fish Species Profile
Trichogaster leeri - Pearl Gourami
Pearl Gourami Fish Species Profile
Blood parrot showing small mouth
Blood Parrot Cichlid Fish Species
Pepper corydora sifting through substrate
11 Top Catfish Species for Your Aquarium
Fish swimming in an aquarium tank
The Anatomy of Fish
Carinotetraodon travancoricus
Pea Puffer: Fish Species Profile
Cardinal tetra fish with shiny blue scales on top half and red scales on bottom half
Cardinal Tetra (Red Neon Tetra) Fish Species Profile
Amano shrimp sitting on a plant
Amano Shrimp Species Profile
Weather loach
Weather Loach for Your Aquarium
Cherry barb in an aquarium
Cherry Barb: Fish Species Profile
Puntius conchonius - Rosy Barb
Rosy Barb (Red Barb) Fish Species Profile
Triggerfish
Triggerfish Family Balistidae Profile
Oscar cichlid
Oscar: Fish Species Profile
Breeding The Original Tropical Fish, The Paradise Fish
Paradise Fish - Macropodus opercularis
Mollie fish with gray and black-spotted scales swimming near foliage closeup
Mollie Fish Species Profile
Tiger Barb - Barbus tetrazona
Tiger Barb Fish Species Profile
Goldfish in a tank
How to Take Care of Goldfish
Three Stripe Cory Fish
Three Stripe Cory Fish Species Profile
dwarf gourami
Dwarf Gourami (including Powder Blue and Flame Gouramis) Fish Species Profile
Siamese algae eater fish swimming upward with black stripe down side
Common Fish Names Beginning With 'S'
Betta fish foraging for food
How Much to Feed Your Betta Fish
Siamese Fighting fish swimming against a white background.
Commonly Asked Questions About Bettas
Two betta fish facing off
Why Do Betta Fish Fight?
Yellow and white koi fish swimming near water surface
Koi: Fish Species Profile
Contgo Tetra Comunity Aquarium Fish
Congo Tetra Fish Species Profile
Zebrafish (Danio rerio) aquarium fish
Zebra Danio (Zebrafish) Fish Species Profile
Small forktailed rainbowfish near bottom of fish tank with pebbles
Forktailed Rainbowfish Species Profile
Leaffish
South American Leaffish Species Profile
Neon goby on stone coral
Neon Goby Fish Species Profile
panda catfish
Panda Cory (Panda Catfish) Species Profile