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Freshwater fishes

The fish list

499 species, each with the water it needs, who it gets along with, and where it comes from. Find one, or browse by family, genus or river.

Endangered Rare Popular Peaceful Small (6 cm or less)Calm water Strong flow Schooling L-numbers ✓ With photo Basic profiles too

Showing: Home water: Swamp or paddy ✕

Swamp or paddy 7 fish

Betta (Siamese fighting fish)

Betta (Siamese fighting fish)

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Gouramis & bettas · Betta

24–30°C
pH 6–7.5
Calm
2.6 in
Top/mid
Meat
Semi-agg.!

Lone male. Males fight. Keep one, or give each his own space.

Betta (Siamese fighting fish)

Betta splendens

Rice paddies and marshes of Thailand · swamp or paddy

Temperature: 24–30°C
pH: 6–7.5
Adult size: 2.6 in · 6.5 cm
Flow: Calm
Swims: Top and mid-water
Temperament: Semi-aggressive
Diet: Carnivore
Group: 1+
Typical price: $8–40

Lone male. Males fight. Keep one, or give each his own space.

Long fins. Fin nippers will pick on it.

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Photo: ErgoSum88, Public domain

Chili rasbora

Chili rasbora

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Rasboras & danios · BorarasStaple

20–28°C
pH 4–7
Calm
0.8 in
Mid
Mixed
Peaceful
8+ group!

Chili rasbora

Boraras brigittae

Peat swamps of southwest Borneo · swamp or paddy

Temperature: 20–28°C
pH: 4–7
Adult size: 0.8 in · 2 cm
Flow: Calm
Swims: Mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 8+
Typical price: $3–5
Rarity: Pet-store staple

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Photo: Daiju Azuma, CC BY-SA 4.0

Dwarf gourami

Dwarf gourami

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Gouramis & bettas · Trichogaster

24–28°C
pH 6–7.5
Calm
2.8 in
Top/mid
Mixed
Peaceful

Lone male. Males fight. Keep one, or give each his own space.

Dwarf gourami

Trichogaster lalius

Slow, plant-choked waters of India and Bangladesh · swamp or paddy

Temperature: 24–28°C
pH: 6–7.5
Adult size: 2.8 in · 7 cm
Flow: Calm
Swims: Top and mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 1+
Typical price: $6–12

Lone male. Males fight. Keep one, or give each his own space.

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Photo: Kennyannydenny, CC BY-SA 3.0

Harlequin rasbora

Harlequin rasbora

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Rasboras & danios · TrigonostigmaStaple

22–28°C
pH 5–7.5
Calm
1.8 in
Mid
Mixed
Peaceful
8+ group!

Harlequin rasbora

Trigonostigma heteromorpha

Peat swamp streams, Malay Peninsula and Sumatra · swamp or paddy

Temperature: 22–28°C
pH: 5–7.5
Adult size: 1.8 in · 4.5 cm
Flow: Calm
Swims: Mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 8+
Typical price: $3–5
Rarity: Pet-store staple

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Photo: NasserHalaweh, CC BY-SA 4.0

Kuhli loach

Kuhli loach

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Loaches · PangioStaple

24–29°C
pH 5.5–7
Calm
4 in
Bottom
Mixed
Peaceful
5+ group

Kuhli loach

Pangio kuhlii

Peat swamp streams of Malaysia and Indonesia · swamp or paddy

Temperature: 24–29°C
pH: 5.5–7
Adult size: 4 in · 9 cm
Flow: Calm
Swims: Bottom
Temperament: Peaceful
Diet: Omnivore
Group: 5+
Typical price: $4–8
Rarity: Pet-store staple

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Photo: Robert Mollik, CC BY-SA 4.0

Pearl gourami

Pearl gourami

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Gouramis & bettas · Trichopodus

24–28°C
pH 6–7.5
Calm
5 in
Top/mid
Mixed
Peaceful

Long fins. Fin nippers will pick on it.

Pearl gourami

Trichopodus leerii

Peat swamps of Malaysia, Sumatra and Borneo · swamp or paddy

Temperature: 24–28°C
pH: 6–7.5
Adult size: 5 in · 12 cm
Flow: Calm
Swims: Top and mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 1+
Typical price: $7–14

Long fins. Fin nippers will pick on it.

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Photo: BEDO (Thailand), CC BY-SA 4.0

Sparkling gourami

Sparkling gourami

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Gouramis & bettas · TrichopsisStaple

24–28°C
pH 6–7.5
Calm
1.6 in
Top/mid
Meat
Peaceful
4+ group

Sparkling gourami

Trichopsis pumila

Rice paddies and ditches of Southeast Asia · swamp or paddy

Temperature: 24–28°C
pH: 6–7.5
Adult size: 1.6 in · 4 cm
Flow: Calm
Swims: Top and mid-water
Temperament: Peaceful
Diet: Carnivore
Group: 4+
Typical price: $4–8
Rarity: Pet-store staple

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Photo: Zikamoi, CC BY-SA 3.0

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