Common Pleco (Hypostomus plecostomus) Care Guide
One of the most commonly sold aquarium fish, often purchased for algae control. Grows very large — up to 50 cm — and quickly outgrows most home aquariums.
Compiled by Aquairi from published sources · Published · Updated
Overview
Hypostomus plecostomus is a species in the family Loricariidae. One of the most commonly sold aquarium fish, often purchased for algae control. Grows very large — up to 50 cm — and quickly outgrows most home aquariums. Produces a significant amount of waste and is primarily nocturnal.
Taxonomy
- Family: Loricariidae
- Genus: Hypostomus
- Scientific name: Hypostomus plecostomus
- Other names: Suckermouth Catfish
- Origin: South America
Habitat
Native to north-eastern South America and the Amazon basin. Inhabits a wide range of habitats from clear fast-flowing rivers to slow turbid backwaters. Often confused with related Pterygoplichthys species in the trade; reaches a much larger size than most home aquariums can accommodate.
Tank requirements
- Minimum tank volume: 400 L
- Temperature: 22-28 °C
- pH: 6-7.5
- GH: 3-15 °dGH
- Water flow: moderate
- Adult size: 30-50 cm
- Lifespan: 10-20 years
- Difficulty: intermediate
Diet
Classified as omnivore. Recommended feeding frequency: 1x daily. In captivity, offer a varied diet appropriate to the species — quality prepared foods supplemented with frozen or live items of suitable size.
Compatibility
- Temperament: peaceful
- Swimming level: bottom
- Compatible tank mates: Oscar, Angelfish, Large Cichlids, Silver Dollar
- Avoid with: Small Tanks, Other Large Plecos
Breeding
- Breeding strategy: cave-spawner
- Breeding difficulty: advanced
Common Pleco Breeding Guide (Hypostomus plecostomus)
Overview
The Common Pleco, Hypostomus plecostomus, is a large suckermouth catfish that grows up to about 50 cm. It is native to tropical northeastern South America, including northeastern Brazil, the Guianas and Trinidad and Tobago. Its natural breeding strategy makes reproduction in home aquaria impractical.
Breeding Setup
In nature many Hypostomus species spawn in hollows dug into mud banks or within hollow logs. The fish dig tunnels into mud banks to create a nesting chamber; in commercial ponds they have even been known to drain earthen ponds with their excavations. This burrowing requirement cannot be reproduced in a glass aquarium.
Spawning Behavior & Trigger
The species is not usually spawned in aquaria but is produced in quantity in ponds, both in Southeast Asia and in Florida. In those pond operations a pair spawns in a pit fanned out of a steep muddy bank, and the male guards the eggs and then the fry.
Common Challenges
The combination of very large adult size, high bioload and the need to excavate muddy bank tunnels makes home breeding effectively unfeasible. Hobbyists should treat captive-bred or wild-caught fish as the only practical source rather than attempting tank spawning.