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Taxonomy Archive

Freshwater Fish Care Guides & Tips

Comprehensive guides to freshwater aquarium species: tetras, cichlids, catfish, barbs, and livebearers with adult sizes and water requirements.

Profiles 123
Beginner 55
Peaceful 87
African Cichlid Min 55 Gal
advanced Care Freshwater

African Cichlid

Pseudocrenilabrinae (Mbuna, Peacock, Haplochromis)

Temperament: aggressive

View Species Guide →
Angelfish Min 30 Gal
intermediate Care Freshwater

Angelfish

Pterophyllum scalare

Temperament: semi-aggressive

View Species Guide →
Bala Shark Min 125 Gal
advanced Care Freshwater

Bala Shark

Balantiocheilos melanopterus

Temperament: aggressive

View Species Guide →
Banjo Catfish Min 20 Gal
intermediate Care Freshwater

Banjo Catfish

Bunocephalus coracoideus

Temperament: peaceful

View Species Guide →
Betta Fish Min 2.5 Gal
beginner Care Freshwater Fish

Betta Fish

Betta splendens

Temperament: territorial

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Blue Gourami Min 35 Gal
beginner Care Freshwater

Blue Gourami

Trichopodus trichopterus

Temperament: semi-aggressive

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Bolivian Ram Min 20 Gal
beginner Care Freshwater

Bolivian Ram

Mikrogeophagus altispinosus

Temperament: peaceful

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Clown Barb Min 55 Gal
beginner Care Freshwater

Clown Barb

Barbodes everetti

Temperament: peaceful

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Clown Loach Min 125 Gal
advanced Care Freshwater

Clown Loach

Chromobotia macracanthus

Temperament: peaceful

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Congo Tetra Min 30 Gal
intermediate Care Freshwater

Congo Tetra

Phenacogrammus interruptus

Temperament: peaceful

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Discus Min 55 Gal
advanced Care Freshwater

Discus

Symphysodon spp.

Temperament: peaceful

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Dojo Loach Min 40 Gal
beginner Care Freshwater

Dojo Loach

Misgurnus anguillicaudatus

Temperament: peaceful

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Dwarf Gourami Min 10 Gal
intermediate Care Freshwater

Dwarf Gourami

Trichogaster lalius

Temperament: semi-aggressive

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Elephant Nose Fish Min 55 Gal
advanced Care Freshwater

Elephant Nose Fish

Gnathonemus petersii

Temperament: Peaceful with other species, but territorial with its own kind

View Species Guide →
Ember Tetra Min 10 Gal
beginner Care Freshwater

Ember Tetra

Hyphessobrycon amandae

Temperament: peaceful

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Farlowella Min 20 Gal
intermediate Care Freshwater

Farlowella

Farlowella vittata

Temperament: peaceful

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Flying Fox Min 30 Gal
intermediate Care Freshwater

Flying Fox

Epalzeorhynchos kalopterus

Temperament: semi-aggressive

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Garra Rufa Min 30 Gal
intermediate Care Freshwater

Garra Rufa

Garra rufa

Temperament: semi-aggressive

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Gold Barb Min 30 Gal
beginner Care Freshwater

Gold Barb

Barbodes semifasciolatus var. schuberti

Temperament: peaceful

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Green Terror Min 55 Gal
intermediate Care Freshwater

Green Terror

Andinoacara rivulatus

Temperament: semi-aggressive

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Guppy Min 10 Gal
beginner Care Freshwater

Guppy

Poecilia reticulata

Temperament: peaceful

View Species Guide →
Koi
advanced Care Freshwater

Koi

Cyprinus rubrofuscus

Temperament: peaceful

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Lemon Tetra Min 15 Gal
beginner Care Freshwater

Lemon Tetra

Hyphessobrycon pulchripinnis

Temperament: peaceful

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Melon Barb Min 20 Gal
intermediate Care Freshwater

Melon Barb

Haludaria fasciata

Temperament: peaceful

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Molly Min 20 Gal
beginner Care Freshwater

Molly

Poecilia sphenops (primary); P. latipinna; P. velifera; P. mexicana

Temperament: peaceful

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Neon Tetra Min 15 Gal
beginner Care Freshwater

Neon Tetra

Paracheirodon innesi

Temperament: peaceful

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Oscar Min 75 Gal
advanced Care Freshwater

Oscar

Astronotus ocellatus

Temperament: aggressive

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Panda Garra Min 20 Gal
beginner Care Freshwater

Panda Garra

Garra flavatra

Temperament: semi-aggressive

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Pea Puffer Min 10 Gal
intermediate Care Freshwater

Pea Puffer

Carinotetraodon travancoricus

Temperament: aggressive

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Platy Min 10 Gal
beginner Care Freshwater

Platy

Xiphophorus maculatus

Temperament: peaceful

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Rainbow Shark Min 55 Gal
intermediate Care Freshwater

Rainbow Shark

Epalzeorhynchos frenatum

Temperament: semi-aggressive

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Red Rainbowfish Min 55 Gal
intermediate Care Freshwater

Red Rainbowfish

Glossolepis incisus

Temperament: peaceful, but boisterous and highly active - can intimidate slow or timid tankmates through sheer activity level rather than aggression

View Species Guide →
Rope Fish Min 55 Gal
intermediate Care Freshwater

Rope Fish

Erpetoichthys calabaricus

Temperament: peaceful

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Rosy Barb Min 30 Gal
beginner Care Freshwater

Rosy Barb

Pethia conchonius

Temperament: semi-aggressive

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Serpae Tetra Min 20 Gal
intermediate Care Freshwater

Serpae Tetra

Hyphessobrycon eques

Temperament: semi-aggressive

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Severum Min 55 Gal
intermediate Care Freshwater

Severum

Heros efasciatus

Temperament: semi-aggressive

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Shell Dweller Min 10 Gal
intermediate Care Freshwater

Shell Dweller

Neolamprologus multifasciatus

Temperament: aggressive

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Swordtail Min 20 Gal
beginner Care Freshwater

Swordtail

Xiphophorus hellerii

Temperament: peaceful

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Tiger Barb Min 30 Gal
intermediate Care Freshwater

Tiger Barb

Puntigrus tetrazona

Temperament: semi-aggressive

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X-Ray Tetra Min 15 Gal
beginner Care Freshwater

X-Ray Tetra

Pristella maxillaris

Temperament: peaceful

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YoYo Loach Min 40 Gal
intermediate Care Freshwater

YoYo Loach

Botia almorhae

Temperament: peaceful

View Species Guide →

Planning a Freshwater Aquarium?

Validate water volume, calculate stocking density, and test bioload before introducing new species to your aquarium.

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