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Royal pleco (Panaque nigrolineatus)
Photo: pl:user:lcamtuf · CC BY-SA 3.0 via Wikimedia Commons

Royal pleco

Panaque nigrolineatus · Loricariidae

Also known as L190

Advanced

A striking wood-eating giant with orange eyes — beautiful, but it needs a very large tank.

In short: A royal pleco needs at least 570 L (151 US gal), water at 24–29 °C (75–84 °F) and pH 6.5–7.8. It is semi-aggressive, usually kept singly, and rated advanced to keep.

Minimum tank
570 L (151 US gal)
Temperature
24–29 °C (75–84 °F)
pH
6.5–7.8
Adult size
40 cm (15.7 in)
Group size
1+

Care requirements

Minimum tank volume
570 L (151 US gal)
Temperature
24–29 °C (75–84 °F)
pH
6.5–7.8
Hardness
4–20 dGH
Lifespan
10–20 years
Diet
Wood-rasper/herbivore — driftwood, courgette, sweet potato, wafers.
Care level
Advanced

Origin & habitat

Native region
Orinoco basin, Colombia and Venezuela
Water type
Freshwater
Biotope
Deep wood-filled river channels
Natural conditions
Large volume, heavy filtration, lots of driftwood.

Behaviour & stocking

Temperament
Semi-aggressive
Minimum group
1 fish
Swims
Bottom
Good tank mates
Large characins
Geophagus
Silver dollar
Avoid
Small tanks
Other large plecos

Breeding & difficulty

Breeding difficulty
Advanced
Sexing
Males are slimmer with more odontodes.
Notes
Essentially not bred in home tanks.
Common ailments
Malnutrition without wood
Bloat
Nitrate stress
Will it fit your tank?

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