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: River & region: Unknown origin ✕

Unknown origin 12 fish

Red lizard whiptail

L010a

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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.

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Photo: Kaden Slone, CC BY 4.0

Blue-eye lemon bristlenose

L144

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Plecos · AncistrusStaple

22–28°C
pH 5.5–7.5
Gentle
5 in
Bottom
Mixed
Peaceful

Yellow bristlenose with blue eyes.

Blue-eye lemon bristlenose

L144

Aquarium-bred strain. Its wild origin isn’t well documented. · river

Temperature: 22–28°C
pH: 5.5–7.5
Adult size: 5 in · 12 cm
Flow: Gentle
Swims: Bottom
Temperament: Peaceful
Diet: Omnivore
Breeding: Easy
Typical price: $10–35
In Canada: Common
Rarity: Pet-store staple

Yellow bristlenose with blue eyes. Easy and cheap, but happier below 28°C. L144a is the longfin form.

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Photo: Corydoras-adolfoi, CC BY-SA 4.0

Pearlscale whiptail

L042

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Plecos · Rineloricaria

22–27°C
pH 5.5–7.5
Bottom
Mixed

Pearlscale whiptail

L042

Rineloricaria cf. platyura

Unknown origin · river

Temperature: 22–27°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Photo: Julien Renoult, CC BY 4.0

Spotted Cochliodon

L050

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Plecos · Hypostomus

23–28°C
pH 5.5–7.5
Bottom
Mixed

Spotted Cochliodon

L050

Hypostomus cf. cochliodon

Unknown origin · river

Temperature: 23–28°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Photo: Douglas Lopes, CC BY 4.0

Paraguay Pleco

L051

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Plecos · Hypostomus

23–28°C
pH 5.5–7.5
Bottom
Mixed

Paraguay Pleco

L051

Hypostomus latifrons

Unknown origin · river

Temperature: 23–28°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Photo: Julia Mantinian, CC BY NC

Hypostomus cf. nematopterus

L060

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Plecos · Hypostomus

23–28°C
pH 5.5–7.5
Bottom
Mixed

Hypostomus cf. nematopterus

L060

Hypostomus cf. nematopterus

Unknown origin · river

Temperature: 23–28°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Photo: Maël Lemaitre, CC BY NC

Ecuador Pleco

L109

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Plecos · Aphanotorulus

23–28°C
pH 5.5–7.5
Bottom
Mixed

Ecuador Pleco

L109

Aphanotorulus cf. unicolor

Ecuador · river

Temperature: 23–28°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Photo: Whaldener Endo, CC0

Pears' Rubbernose Pleco

L187b

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Plecos · Chaetostoma

20–25°C
pH 5.5–7.5
Bottom
Veg

Pears' Rubbernose Pleco

L187b

Chaetostoma pearsei

Unknown origin · river

Temperature: 20–25°C
pH: 5.5–7.5
Swims: Bottom
Diet: Grazer

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Photo: AndreaH 12, CC BY-SA 4.0

Peckoltia sp.

L218

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Plecos · Peckoltia

25–29°C
pH 5.5–7.5
Bottom
Mixed

Peckoltia sp.

L218

Peckoltia sp.

Unknown origin · river

Temperature: 25–29°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Photo: Frank-Christian Baum (user Fcbaum), CC BY-SA 3.0

Paraguay Pleco

L281

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Plecos · Hypostomus

23–28°C
pH 5.5–7.5
Bottom
Mixed

Paraguay Pleco

L281

Hypostomus latifrons

Unknown origin · river

Temperature: 23–28°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Photo: Julia Mantinian, CC BY NC

Lasiancistrus cf. caucanus

L312

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Plecos · Lasiancistrus

24–28°C
pH 5.5–7.5
Bottom
Mixed

Lasiancistrus cf. caucanus

L312

Lasiancistrus cf. caucanus

Unknown origin · river

Temperature: 24–28°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Photo: Ictiologia Universidad Católica de Oriente, CC BY 2.0

Pseudacanthicus cf. spinosus

L375

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Plecos · Pseudacanthicus

26–30°C
pH 5.5–7.5
Bottom
Meat

Pseudacanthicus cf. spinosus

L375

Pseudacanthicus cf. spinosus

Unknown origin · river

Temperature: 26–30°C
pH: 5.5–7.5
Swims: Bottom
Diet: Carnivore

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Photo: François-Louis Laporte, PD

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