Save the Little Fish

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.

Amazon 12 fish

Agassiz's dwarf cichlid

Agassiz's dwarf cichlid ≈

Cichlids · ApistogrammaLC

Leaf-litter creeks and backwaters of the Amazon basin, Peru to Brazil

Agassiz's dwarf cichlid

Apistogramma agassizii

Leaf-litter creeks and backwaters of the Amazon basin, Peru to Brazil · stream

Temperature
22–29°C
pH
5–7
Adult size
3 in · 7.5 cm
Flow
Calm
Swims
Bottom
Temperament
Peaceful
Diet
Carnivore
Group
3+
Status in the wild
Least concern

Photo: Cisamarc, CC BY-SA 3.0

Angelfish

Angelfish ≈

Cichlids · PterophyllumLC

Predator. Eats any fish that fits in its mouth.

Flooded forests of the Amazon basin

Angelfish

Pterophyllum scalare

Flooded forests of the Amazon basin · flooded forest

Temperature
24–30°C
pH
6–7.5
Adult size
6 in · 15 cm
Flow
Calm
Swims
Mid-water
Temperament
Semi-aggressive
Diet
Omnivore
Group
5+
Typical price
$8–30
Status in the wild
Least concern

Predator. Eats any fish that fits in its mouth.

Long fins. Fin nippers will pick on it.

Photo: Rjcastillo, CC BY 4.0

Marbled hatchetfish

Marbled hatchetfish ≈

Tetras · CarnegiellaStaple

Jumper. Keep a tight lid on the tank.

Amazon basin, Peru and Brazil

Marbled hatchetfish

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
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

Oscar

Oscar ≈

Cichlids · AstronotusLC

Predator. Eats any fish that fits in its mouth.

Slow rivers and floodplains of the Amazon

Oscar

Astronotus ocellatus

Slow rivers and floodplains of the Amazon · flooded forest

Temperature
20–28°C
pH
6–7.5
Adult size
13 in · 33 cm
Flow
Calm
Swims
Mid-water and bottom
Temperament
Semi-aggressive
Diet
Carnivore
Group
1+
Typical price
$15–40
Status in the wild
Least concern

Predator. Eats any fish that fits in its mouth.

Photo: Jón Helgi Jónsson (Amything), CC BY-SA 3.0

Serpae tetra

Serpae tetra ≈

Tetras · HyphessobryconStaple

Fin nipper. Keep it away from long-finned fish.

Amazon and Paraguay basins

Serpae tetra

Hyphessobrycon eques

Amazon and Paraguay basins · river

Temperature
22–28°C
pH
5.5–7.5
Adult size
1.8 in · 4.5 cm
Flow
Calm
Swims
Mid-water
Temperament
Semi-aggressive
Diet
Omnivore
Group
6+
Typical price
$3–5
Rarity
Pet-store staple

Fin nipper. Keep it away from long-finned fish.

Photo: Douglas Lopes, CC BY 4.0

Severum

Severum ≈

Cichlids · HerosLC

Predator. Eats any fish that fits in its mouth.

Amazon main channel/Solimões, Ucayali (Peru), Xingu

Severum

Heros efasciatus

Amazon main channel/Solimões, Ucayali (Peru), Xingu · river

Temperature
22–29°C
pH
5.5–7
Adult size
8 in · 20 cm
Flow
Calm
Swims
Mid-water
Temperament
Semi-aggressive
Diet
Omnivore
Group
2+
Status in the wild
Least concern

Predator. Eats any fish that fits in its mouth.

Photo: Rufus46, CC BY-SA 3.0

Tiger peckoltia

L002

Plecos · PeckoltiaUncommon

A small, easy Peckoltia with dark vermiculation on gold.

Lower Amazon near Santarém, Brazil

Tiger peckoltia

L002

Peckoltia vermiculata

Lower Amazon near Santarém, Brazil · river

Temperature
25–29°C
pH
5.5–7.5
Adult size
4 in · 10 cm
Flow
Gentle
Swims
Bottom
Temperament
Peaceful
Diet
Omnivore
Breeding
Moderate
Typical price
$30–60
In Canada
Occasional
Rarity
Uncommon

A small, easy Peckoltia with dark vermiculation on gold. Peaceful and a good community pleco.

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