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

The fishes 499 fish · new every day

← Earlier fishes

Otocinclus

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Catfish · OtocinclusStaple

21–27°C
pH 6–7.5
Gentle
1.6 in
Bottom/mid
Veg
Peaceful
6+ group!

Otocinclus

Otocinclus vittatus

Streams across South America · stream

Temperature: 21–27°C
pH: 6–7.5
Adult size: 1.6 in · 4 cm
Flow: Gentle
Swims: Bottom and mid-water
Temperament: Peaceful
Diet: Grazer
Group: 6+
Typical price: $4–7
Rarity: Pet-store staple

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Photo: No machine-readable author provided. Chle assumed (based on copyright claims)., CC BY-SA 3.0

Pterygoplichthys joselimaianus

L022

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Plecos · Pterygoplichthys

23–28°C
pH 5.5–7.5
Bottom
Mixed

Pterygoplichthys joselimaianus

L022

Pterygoplichthys joselimaianus

Rio Tocantins, Brazil · river

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

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Photo: 5snake5, CC BY-SA 4.0

Hypostomus sp.

L342

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Plecos · Hypostomus

23–28°C
pH 5.5–7.5
Bottom
Mixed

Hypostomus sp.

L342

Hypostomus sp.

Unknown origin · river

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

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Rubber pleco

L056

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Plecos · Pseudancistrus

25–29°C
pH 5.5–7.5
Bottom
Mixed

Rubber pleco

L056

Pseudancistrus sp.

Unknown origin · river

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

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Olive royal pleco

L027b

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Plecos · Panaque

24–29°C
pH 5.5–7.5
Bottom
Wood!

Olive royal pleco

L027b

Panaque cf. armbrusteri 'teles pires'

Rio Teles Pires, Brazil · river

Temperature: 24–29°C
pH: 5.5–7.5
Swims: Bottom
Diet: Wood

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Ancistrus sp.

L349

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Plecos · Ancistrus

23–27°C
pH 5.5–7.5
Bottom
Mixed

Ancistrus sp.

L349

Ancistrus sp.

Unknown origin · river

Temperature: 23–27°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Ancistrus sp.

L325

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Plecos · Ancistrus

23–27°C
pH 5.5–7.5
Bottom
Mixed

Ancistrus sp.

L325

Ancistrus sp.

Unknown origin · river

Temperature: 23–27°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Red fin Lasiancistrus

L178

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Plecos · Lasiancistrus

24–28°C
pH 5.5–7.5
Bottom
Mixed

Red fin Lasiancistrus

L178

Lasiancistrus sp.

Unknown origin · river

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

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Ancistrus sp.

L423

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Plecos · Ancistrus

23–27°C
pH 5.5–7.5
Bottom
Mixed

Ancistrus sp.

L423

Ancistrus sp.

Unknown origin · river

Temperature: 23–27°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Blue fin thresher pleco

L093

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Plecos · Isorineloricaria

23–28°C
pH 5.5–7.5
Bottom
Mixed

Blue fin thresher pleco

L093

Isorineloricaria villarsi

Unknown origin · river

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

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Tangerine Tiger Pleco

L387

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Plecos · Peckoltia

25–29°C
pH 5.5–7.5
Bottom
Mixed

Tangerine Tiger Pleco

L387

Peckoltia sp.

Unknown origin · river

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

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Wavy zebra pleco

L173

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Plecos · Hypancistrus

27–30°C!
pH 5.5–7.5
Bottom
Meat

Wavy zebra pleco

L173

Hypancistrus sp.

Unknown origin · river

Temperature: 27–30°C
pH: 5.5–7.5
Swims: Bottom
Diet: Carnivore

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Curua Zebra Pleco

L428

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Plecos · Hypancistrus

27–30°C!
pH 5.5–7.5
Bottom
Meat

Curua Zebra Pleco

L428

Hypancistrus sp.

Rio Curua, Brazil · river

Temperature: 27–30°C
pH: 5.5–7.5
Swims: Bottom
Diet: Carnivore

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Ancistrus sp.

L267

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Plecos · Ancistrus

23–27°C
pH 5.5–7.5
Bottom
Mixed

Ancistrus sp.

L267

Ancistrus sp.

Unknown origin · river

Temperature: 23–27°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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Hypancistrus lunaorum

L339

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Plecos · Hypancistrus

27–30°C!
pH 5.5–7.5
Bottom
Meat

Hypancistrus lunaorum

L339

Hypancistrus lunaorum

Río Orinoco and Ventuari, Venezuela · river

Temperature: 27–30°C
pH: 5.5–7.5
Swims: Bottom
Diet: Carnivore

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Ancistrus sp.

L355

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Plecos · Ancistrus

23–27°C
pH 5.5–7.5
Bottom
Mixed

Ancistrus sp.

L355

Ancistrus sp.

Unknown origin · river

Temperature: 23–27°C
pH: 5.5–7.5
Swims: Bottom
Diet: Omnivore

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