Orinoco Angel Pleco (L201)
Hypancistrus sp. L201
The Orinoco Angel Pleco (L201) (Hypancistrus sp. L201) is a peaceful fish that's best left to experienced keepers. Give it a tank of at least 100 litres (26 US gallons), water held at 79-86°F, and a pH of 6-7.2.
Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
South America (Orinoco)
- South America
Regional colours match the stocking calculator's origin map.
Orinoco Angel Pleco (L201) Tank Setup
Plan for at least 100 litres (26 US gallons) with soft sand or smooth, rounded gravel - sharp substrate wears down their delicate barbels. Keep the water at 79-86°F with a pH around 6-7.2. They reach about 12 cm as adults, so don't be misled by the small juveniles sold in stores.
What Do Orinoco Angel Plecos Eat?
They're meat-eaters, so feed good-quality frozen or gel foods rather than relying on generic flake. Go easy on portions - leftover protein fouls the water faster than plant foods do.
Orinoco Angel Pleco (L201) Tank Mates
Warm water L-number pleco. Requires high oxygen and good flow. Males territorial with other plecos. The Orinoco Angel Pleco (L201) is peaceful, which is the first thing to weigh up when you choose tank mates. Good matches come down to the whole stocking list working together - temperature, tank size, and temperament - not any single label. Before you buy, run your full stocking list through our stocking calculator. It weighs temperament, adult size, and water needs together, which a single species page can't do on its own.
Are Orinoco Angel Plecos Good for Beginners?
Not a sensible first purchase. Get the tank cycled, keep easier fish stable for a year, then revisit if you still want the extra work this species demands.
Orinoco Angel Pleco (L201) - frequently asked questions
What size tank do Orinoco Angel Plecos need?
Orinoco Angel Plecos need a tank of at least 100 litres (26 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.
What water parameters do Orinoco Angel Plecos need?
Keep them at 79-86°F with a pH of 6-7.2, steady rather than chased to an exact figure. In a cycled tank, ammonia and nitrite should both read 0 ppm, with nitrate kept low through regular water changes.
What do Orinoco Angel Plecos eat?
Orinoco Angel Plecos are meat-eaters. Feed good-quality frozen or gel foods rather than relying on generic flake, and don't overfeed. Feed small amounts once or twice a day, and remove anything they don't eat.
Are Orinoco Angel Plecos good for beginners?
Orinoco Angel Plecos are not a beginner species. They need precise conditions and consistent maintenance, so build experience with hardier fish before keeping them.
Common mistakes with Orinoco Angel Plecos
- Underestimating tank size - the minimum footprint is 100 litres (26 US gallons); impulse buying into a smaller tank leads to stress and shortened lifespan.
- Cool tap water - this species needs 79-86°F; cold acclimation suppresses immune response and often triggers disease outbreaks.
Building a community? Run the full list through the stocking calculator before you add anything else.
Great tank mates
Chosen from temperament, overlapping temperature/pH bands, plausible minimum tank footprints, and size versus yours in App-aquatic data. Hobby nuance always wins - verify stocking and temperament before purchasing.
Check Orinoco Angel Pleco (L201) against any other fish → Compares water parameters, predation risk, fin nipping and tank size, and draws both at life size.
Fish to avoid mixing with Orinoco Angel Plecos
These well-known species are commonly sold alongside this fish but are not recommended tank mates - verify before purchasing.
- OscarPredator - Oscar will eat or injure smaller tank mates
- Pea PufferPredator - Pea Puffer will eat or injure smaller tank mates
- Common GoldfishGoldfish - prefer cooler, harder water that tropical fish cannot tolerate
