About
Plecos are a group of freshwater catfish from the Loricariidae family, known for their algae-eating behavior and armored bodies.Scientific Name
Varies by species (e.g., Hypostomus plecostomus, Pterygoplichthys gibbiceps)Habitat
Native to South America, especially the Amazon River basin. Found in slow-moving rivers, streams, and flooded forest areas.Conservation
Most species are not endangered, but some wild populations are declining due to habitat loss and overcollection for the aquarium trade.Lifespan
Can live 10–15 years with proper care in captivity.Fun Fact
Plecos have a sucker mouth that allows them to cling to surfaces and scrape algae – making them great tank cleaners.Diet
Omnivorous – feeds primarily on algae, plant matter, and detritus. In aquariums, also accepts wafers, vegetables, and protein foods.Average Size
Size varies widely by species – can range from 4 inches to over 24 inches.Location / Placement info
Displayed in the Coastal Reef Exhibit, near the Ocean-View TunnelFAQ
What is the lifespan of a Pleco?
Depending on the species, Plecos can live up to 10–20 years in captivity.
What do Plecos eat?
They are mostly herbivorous (some are omnivorous), feeding on algae, veggies, sinking wafers, and wood (for some species).
Are Plecos aggressive?
Most Plecos are peaceful, but larger species can be territorial, especially with other bottom dwellers.
What is the ideal tank size for Plecos?
Small species like bristlenose need 30+ gallons; large common plecos may require 75–150 gallons or more.
Do they need a specific environment?
Yes, they need hiding places, driftwood, soft substrate, and stable water quality with moderate flow.
How big do Plecos grow?
Small species grow up to 4–6 inches (10–15 cm); large species like Common Pleco can grow up to 24 inches (60 cm).
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