The fish list

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

Photo: Robert Mollik, CC BY-SA 4.0

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

Photo: NasserHalaweh, CC BY-SA 4.0

Carnegiella strigata

Amazon basin, Peru and Brazil · blackwater stream

Temperature

24–28°C

pH

5.5–7

Adult size

1.4 in · 3.5 cm

Flow

Calm

Swims

Top

Temperament

Peaceful

Diet

Carnivore

Group

6+

Typical price

$4–8

Rarity

Pet-store staple

Jumper. Keep a tight lid on the tank.

Photo: SOK, CC BY-SA 4.0

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

Photo: Waugsberg, CC BY 2.5

Tanichthys albonubes

Mountain streams near Guangzhou, China · stream

Temperature

14–22°C

pH

6–8

Adult size

1.6 in · 4 cm

Flow

Gentle

Swims

Top and mid-water

Temperament

Peaceful

Diet

Omnivore

Group

6+

Typical price

$2–4

Rarity

Pet-store staple

Photo: Ethmostigmus, CC BY-SA 4.0

Hemigrammus rhodostomus

Lower Amazon and Rio Negro, Brazil · blackwater stream

Temperature

24–28°C

pH

5.5–7

Adult size

2 in · 5 cm

Flow

Gentle

Swims

Mid-water

Temperament

Peaceful

Diet

Omnivore

Group

8+

Typical price

$3–6

Rarity

Pet-store staple

Photo: Gavinevans, CC BY-SA 3.0

Neocaridina davidi

Streams of Taiwan and eastern China · stream

Temperature

18–26°C

pH

6.5–8

Adult size

1 in · 2.5 cm

Flow

Calm

Swims

Bottom

Temperament

Peaceful

Diet

Grazer

Group

10+

Typical price

$2–5

Rarity

Pet-store staple

Invertebrate. Many fish will eat it, so choose tank mates with care.

Photo: TonyZimbinski, CC BY-SA 4.0

Pethia conchonius

Rivers of northern India · river

Temperature

18–25°C

pH

6–8

Adult size

4 in · 10 cm

Flow

Gentle

Swims

Mid-water

Temperament

Peaceful

Diet

Omnivore

Group

6+

Typical price

$3–6

Rarity

Pet-store staple

Photo: Usien, CC0

Paracheirodon innesi

Upper Amazon basin: Peru, Colombia, Brazil · blackwater stream

Temperature

20–26°C

pH

5–7

Adult size

1.4 in · 3.5 cm

Flow

Calm

Swims

Mid-water

Temperament

Peaceful

Diet

Omnivore

Group

6+

Typical price

$2–5

Rarity

Pet-store staple

Photo: Holger Krisp, CC BY 3.0

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

Photo: h080, CC BY-SA 2.0

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

Photo: AquaTuer, CC BY-SA 4.0

Corydoras aeneus

Widespread in South America · stream

Temperature

22–28°C

pH

6–8

Adult size

2.8 in · 7 cm

Flow

Gentle

Swims

Bottom

Temperament

Peaceful

Diet

Omnivore

Group

6+

Typical price

$3–6

Rarity

Pet-store staple

Photo: Andrew Keller, CC0

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

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