Common Pleco
Hypostomus plecostomus
Also known as: Plecostomus, Suckermouth Catfish, Algae Eater
The Common Pleco is a popular algae-eating catfish, but buyers beware - these fish grow massive! Often sold at 2-3 inches, they can reach over 2 feet and outgrow most aquariums. Consider smaller species like Bristlenose Plecos instead.
Max Size
24 inches (60 cm)
Lifespan
10-15 years
Depth
0-5 meters
Water Type
freshwater
Scientific Classification
- Class
- Actinopterygii
- Order
- Siluriformes
- Family
- Loricariidae
- Species
- Hypostomus plecostomus
Habitat & Distribution
Habitat
Distribution
Behavior
Common Plecos are nocturnal and spend days hiding in caves or under driftwood. At night they emerge to graze on algae and biofilm. They can become territorial with age.
Reproduction
Males guard cave nests where females deposit eggs. Breeding is rare in aquariums without specific cave setups and conditioning.
Aquarium Care Guide
Minimum Tank Size
75 gallons
Care Level
Easy
Temperament
Peaceful
Temperature
72°F - 82°F
Diet
Herbivore - algae, vegetables, algae wafers
Can Common Pleco Live With...?
Explore detailed compatibility guides for Common Pleco with other popular aquarium fish.
Conservation Status
Main Threats
- Invasive in many countries
🎉 Fun Facts
- They can breathe air and survive out of water briefly
- Their eyes have an omega-shaped iris for light control
- Plecos are nocturnal and hide during the day
- They have been found in sewers and have become invasive
- Despite their reputation, they need supplemental food beyond algae
