Freshwater fishes

The fish list

542 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: Rio Negro ✕

Rio Negro 3 fish

Starlight bristlenose

L183

Starlight bristlenose

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Plecos · AncistrusUncommon

Black with white stars and white fin edges.

Starlight bristlenose

L183

Ancistrus dolichopterus

Rio Negro, Brazil · river

Temperature: 23–28°C
pH: 5.5–7.5
Adult size: 6 in · 15 cm
Flow: Gentle
Swims: Bottom
Temperament: Peaceful
Diet: Omnivore
Breeding: Easy–moderate
Typical price: $25–80
In Canada: Occasional
Rarity: Uncommon

Black with white stars and white fin edges. The prettiest bristlenose, but it prefers cooler, soft water.

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Photo: Alberto Mejia-Paniagua, CC BY NC SA

Spotted orange seam pleco

L106

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Plecos · Hemiancistrus

Spotted orange seam pleco

L106

Hemiancistrus guahiborum

Rio Negro, Orinoco and Ventuari, Brazil and Venezuela · river

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

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Butterfly pleco

L168

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Plecos · Dekeyseria

Butterfly pleco

L168

Dekeyseria brachyura

Rio Negro and Orinoco, Brazil and Venezuela · river

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

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