Royal Pleco
Panaque nigrolineatus
Minimum Tank
125 Gallons
Adult Size
17 inches
Temperature
72-86°F (22-30°C)
pH Range
6.5-7.5
Lifespan
20 years
About Royal Pleco
The royal pleco is a large, impressively marked catfish from the Orinoco and Amazon river basins in Venezuela, Colombia, and Brazil. Its body features bold, wavy dark brown lines on a lighter tan to gray background, with striking red eyes that add to its regal appearance. Royal plecos can reach up to 17 inches, making them among the largest commonly kept pleco species. They are specialized wood-eaters with powerful jaws adapted for rasping and consuming driftwood, processing it with the help of symbiotic gut bacteria. Royal plecos are slow-growing, long-lived fish that can survive for over 25 years. Their impressive size, distinctive pattern, and unusual dietary habits make them fascinating aquarium specimens for dedicated keepers.
Care Requirements
Tank Setup
- • Minimum 125-gallon tank required
- • Temperature: 72-86°F (22-30°C)
- • pH: 6.5 - 7.5
- • Category: Catfish
Diet & Feeding
- • Diet type: Herbivore
- • Feed 1-2 times daily
- • Varied diet recommended
Tank Mate Compatibility
Compatible With
Avoid Keeping With
Care Tips
Expert Tips
Royal plecos need a very large tank of at least 125 gallons for adults, with multiple large pieces of driftwood as both shelter and the primary component of their diet. They are obligate wood-eaters and will not thrive without substantial driftwood. Supplement with blanched vegetables, algae wafers, and occasional protein foods. They prefer warm water at 75-82°F with moderate to strong flow. Royal plecos are territorial toward other large bottom-dwellers, so provide ample space and hiding spots. They are slow-growing but eventually reach an impressive size, so plan accordingly. Strong filtration is necessary due to the large amount of wood-based waste they produce.
Quick Facts
473L
Min Tank (125gal)
43cm
Adult Size (17")
20yr
Lifespan
1+
Can Keep Solo
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Find compatible tankmates for your Royal Pleco
Related Species You Might Like
Common Pleco
Hypostomus plecostomus
Otocinclus
Otocinclus sp.
Pictus Catfish
Pimelodus pictus
Glass Catfish
Kryptopterus vitreolus
Pygmy Corydoras
Corydoras pygmaeus
Rubber Lip Pleco
Chaetostoma sp.
Tank Mates for Royal Pleco
Species from our database with overlapping water parameters, compatible temperaments and a realistic shared tank size.
Bala Shark
Balantiocheilos melanopterus
moderate · 125+ gal
Yoyo Loach
Botia almorhae
moderate · 40+ gal
Clown Loach
Chromobotia macracanthus
moderate · 100+ gal
Congo Tetra
Phenacogrammus interruptus
moderate · 30+ gal
Similar Care Level
Other moderate-care species that suit a comparable setup.
Frequently Asked Questions
What size tank does a Royal Pleco need?
A Royal Pleco needs a minimum tank size of 125 gallons (473 litres).
What water parameters does a Royal Pleco need?
Royal Pleco thrive in water between 72-86°F (22-30°C) with a pH of 6.5-7.5.
Are Royal Pleco easy to care for?
Royal Pleco are considered moderate to care for. They are peaceful fish with a lifespan of about 20 years.
How big do Royal Pleco get and what do they eat?
Royal Pleco reach about 17 inches and are herbivores. Royal plecos need a very large tank of at least 125 gallons for adults, with multiple large pieces of driftwood as both shelter and the primary component of their diet. They are obligate wood-eaters and will not thrive without substantial driftwood. Supplement with blanched vegetables, algae wafers, and occasional protein foods. They prefer warm water at 75-82°F with moderate to strong flow. Royal plecos are territorial toward other large bottom-dwellers, so provide ample space and hiding spots. They are slow-growing but eventually reach an impressive size, so plan accordingly. Strong filtration is necessary due to the large amount of wood-based waste they produce.