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: Genus: Pseudacanthicus ✕

Pseudacanthicus 4 fish

Red-fin cactus

L024

≈

Plecos · PseudacanthicusRare

26–30°C
pH 5.5–7.5
Strong!
16 in!
Bottom
Meat
Aggressive!

Dark body with red fin edges.

Red-fin cactus

L024

Pseudacanthicus pitanga

Rio Tocantins, Brazil · rapids

Temperature: 26–30°C
pH: 5.5–7.5
Adult size: 16 in · 40 cm
Flow: Strong
Swims: Bottom
Temperament: Aggressive
Diet: Carnivore
Breeding: Rarely
Typical price: $130–400
In Canada: Rare
Rarity: Rare or hard to breed

Dark body with red fin edges. Large and aggressive.

View full profile

Photo: B. Phalan, CC BY 4.0

Scarlet cactus

L025

≈

Plecos · PseudacanthicusRare

26–30°C
pH 5.5–7.5
Strong!
24 in!
Bottom
Meat
Aggressive!

Grey with scarlet fins.

Scarlet cactus

L025

Pseudacanthicus pirarara

Rio Xingu, Brazil · rapids

Temperature: 26–30°C
pH: 5.5–7.5
Adult size: 24 in · 60 cm
Flow: Strong
Swims: Bottom
Temperament: Aggressive
Diet: Carnivore
Breeding: Rarely
Typical price: $400–1000
In Canada: Rare
Rarity: Rare or hard to breed

Grey with scarlet fins. Can pass 60 cm, so it needs a tank of its own.

View full profile

Photo: JSutton93, CC BY SA

Leopard cactus

L114

≈

Plecos · PseudacanthicusRare

26–30°C
pH 5.5–7.5
Strong!
14 in!
Bottom
Meat
Aggressive!

Cream with bold black spots and a spiny body.

Leopard cactus

L114

Pará, Brazil. Sources differ on the exact river. · rapids

Temperature: 26–30°C
pH: 5.5–7.5
Adult size: 14 in · 35 cm
Flow: Strong
Swims: Bottom
Temperament: Aggressive
Diet: Carnivore
Breeding: Rarely
Typical price: $250–800
In Canada: Rare
Rarity: Rare or hard to breed

Cream with bold black spots and a spiny body. Grows to about 35 cm and is aggressive.

View full profile

Photo: Whaldener Endo, CC0

Guyana leopard cactus

L600

≈

Plecos · PseudacanthicusRare

26–30°C
pH 5.5–7.5
Strong!
12 in!
Bottom
Meat
Aggressive!

Spotted cactus pleco with orange-edged fins.

Guyana leopard cactus

L600

Pseudacanthicus leopardus

Rupununi and Essequibo, Guyana, and the Rio Branco, Brazil · rapids

Temperature: 26–30°C
pH: 5.5–7.5
Adult size: 12 in · 30 cm
Flow: Strong
Swims: Bottom
Temperament: Aggressive
Diet: Carnivore
Breeding: Rarely
Typical price: $90–300
In Canada: Rare
Rarity: Rare or hard to breed

Spotted cactus pleco with orange-edged fins. Large, spiny and aggressive with other plecos.

View full profile

Photo: Sesamehoneytart, CC BY-SA 3.0

Showing 4 of 4