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In-depth species profiles covering taxonomy, natural habitat, water requirements, diet, lifespan, and aquarium care — all in one place.

🐠 30 free species profiles (2026) 💧 Freshwater, Pond & Marine 🖼 CC0 images — commercially safe 🔬 Scientifically reviewed care data
Betta splendens Freshwater
Betta Fish Betta splendens
Beginner
Goldfish Cool Water
Goldfish Carassius auratus
Beginner
Clownfish Marine
Clownfish Amphiprioninae
Beginner
Neon Tetra Freshwater
Neon Tetra Paracheirodon innesi
Beginner
Guppy Freshwater
Guppy Poecilia reticulata
Beginner
Angelfish Freshwater
Angelfish Pterophyllum scalare
Intermediate
Molly Fish Freshwater
Molly Fish Poecilia sphenops
Beginner
Oscar Fish Cichlid
Oscar Fish Astronotus ocellatus
Intermediate
Zebra Danio Freshwater
Zebra Danio Danio rerio
Beginner
Discus Cichlid
Discus Symphysodon spp.
Advanced
Swordtail Freshwater
Swordtail Xiphophorus hellerii
Beginner
Koi Fish Pond
Koi Fish Cyprinus rubrofuscus
Intermediate
Corydoras Freshwater
Corydoras Corydoras spp.
Beginner
Platy Freshwater
Platy Fish Xiphophorus maculatus
Beginner
Rainbowfish Freshwater
Rainbowfish Melanotaeniidae
Beginner
Cherry Barb Freshwater
Cherry Barb Puntius titteya
Beginner
Dwarf Gourami Freshwater
Dwarf Gourami Trichogaster lalius
Beginner
Harlequin Rasbora Freshwater
Harlequin Rasbora Trigonostigma heteromorpha
Beginner
Bristlenose Pleco Freshwater
Bristlenose Pleco Ancistrus spp.
Beginner
German Blue Ram Cichlid
German Blue Ram Mikrogeophagus ramirezi
Intermediate
Tiger Barb Freshwater
Tiger Barb Puntigrus tetrazona
Beginner
Black Skirt Tetra Freshwater
Black Skirt Tetra Gymnocorymbus ternetzi
Beginner
Cardinal Tetra Freshwater
Cardinal Tetra Paracheirodon axelrodi
Intermediate
Pearl Gourami Freshwater
Pearl Gourami Trichopodus leerii
Beginner
Flowerhorn Cichlid Cichlid
Flowerhorn Cichlid Flowerhorn hybrid
Intermediate
Jack Dempsey Cichlid
Jack Dempsey Rocio octofasciata
Intermediate
Rummy-Nose Tetra Freshwater
Rummy-Nose Tetra Hemigrammus rhodostomus
Intermediate
Firemouth Cichlid Cichlid
Firemouth Cichlid Thorichthys meeki
Intermediate
Endler's Livebearer Freshwater
Endler's Livebearer Poecilia wingei
Beginner
Bala Shark Freshwater
Bala Shark Balantiocheilos melanopterus
Intermediate

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