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: River ✕

River 6 fish

Red lizard whiptail

L010a

≈

Plecos · RineloricariaStaple

22–27°C
pH 5.5–7.5
Calm
5 in
Bottom
Mixed
Peaceful

Lays eggs in the open, and the male guards them where you can watch.

Red lizard whiptail

L010a

Aquarium-bred colour strain · river

Temperature: 22–27°C
pH: 5.5–7.5
Adult size: 5 in · 12 cm
Flow: Calm
Swims: Bottom
Temperament: Peaceful
Diet: Omnivore
Breeding: Easy
Typical price: $10–25
In Canada: Common
Rarity: Pet-store staple

Lays eggs in the open, and the male guards them where you can watch. Prefers cooler water.

View full profile

Photo: Kaden Slone, CC BY 4.0

Bolivian ram

≈

Cichlids · Mikrogeophagus

22–28°C
pH 6–7.5
Calm
3 in
Bottom/mid
Mixed
Peaceful
2+ group

Bolivian ram

Mikrogeophagus altispinosus

Mamoré and Guaporé basins, Bolivia and Brazil · river

Temperature: 22–28°C
pH: 6–7.5
Adult size: 3 in · 8 cm
Flow: Calm
Swims: Bottom and mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 2+
Typical price: $10–18

View full profile

Photo: Corpse89, CC BY-SA 3.0

Ember tetra

≈

Tetras · HyphessobryconStaple

23–29°C
pH 5.5–7
Calm
0.8 in
Mid
Mixed
Peaceful
8+ group!

Ember tetra

Hyphessobrycon amandae

Rio Araguaia basin, Brazil · river

Temperature: 23–29°C
pH: 5.5–7
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

View full profile

Photo: Cedricguppy - Loury Cédric, CC BY-SA 4.0

Glowlight tetra

≈

Tetras · HemigrammusStaple

24–28°C
pH 5.5–7.5
Calm
1.6 in
Mid
Mixed
Peaceful
6+ group!

Glowlight tetra

Hemigrammus erythrozonus

Essequibo River, Guyana · river

Temperature: 24–28°C
pH: 5.5–7.5
Adult size: 1.6 in · 4 cm
Flow: Calm
Swims: Mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $2–5
Rarity: Pet-store staple

View full profile

Photo: h080, CC BY-SA 2.0

Lemon tetra

≈

Tetras · HyphessobryconStaple

23–28°C
pH 5.5–7.5
Calm
1.8 in
Mid
Mixed
Peaceful
6+ group!

Lemon tetra

Hyphessobrycon pulchripinnis

Rio Tapajós basin, Brazil · river

Temperature: 23–28°C
pH: 5.5–7.5
Adult size: 1.8 in · 4.5 cm
Flow: Calm
Swims: Mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $3–5
Rarity: Pet-store staple

View full profile

Photo: Waugsberg, CC BY 2.5

Pygmy corydoras

≈

Corydoras · CorydorasStaple

22–26°C
pH 6–7.5
Calm
1 in
Bottom
Mixed
Peaceful
8+ group!

Pygmy corydoras

Corydoras pygmaeus

Rio Madeira basin, Brazil · river

Temperature: 22–26°C
pH: 6–7.5
Adult size: 1 in · 2.5 cm
Flow: Calm
Swims: Bottom
Temperament: Peaceful
Diet: Omnivore
Group: 8+
Typical price: $4–7
Rarity: Pet-store staple

View full profile

Photo: AquaTuer, CC BY-SA 4.0

Showing 6 of 6