Golden Royal Pleco (Panaque cf. nigrolineatus)

Overview

The Golden Royal Pleco (Panaque cf. nigrolineatus), also known as the L190 Pleco, is a striking South American catfish celebrated for its bold golden stripes and peaceful nature. Native to the Amazon River basin, this large, wood-grazing pleco requires a spacious tank with constant driftwood access and strong filtration. Available for sale UK-wide, the Golden Royal Pleco is an excellent choice for experienced aquarists seeking a visually stunning, specialized catfish with demanding care requirements.

Appearance and Coloration

Panaque cf. nigrolineatus displays a robust, armored body with bold golden to yellow stripes on a dark brown to black background. This striking pattern is most pronounced in juveniles and well-conditioned adults. The species has large, expressive eyes, a wide, sucker-like mouth, and prominent odontodes (tooth-like projections) on the gill covers and pectoral fins. Males may have more prominent odontodes than females.

Natural Habitat

The Golden Royal Pleco inhabits fast-flowing rivers and tributaries across the Amazon River basin in South America (Colombia, Venezuela, and Brazil, depending on collection locality). These environments feature strong current, abundant submerged driftwood, rocky areas, and well-oxygenated water. The fish graze constantly on driftwood and biofilm, sheltering among roots and wood during the day.

Aquarium Setup

A minimum 700-litre aquarium is essential for the Golden Royal Pleco, with larger tanks strongly preferred for adult specimens. Provide substantial driftwood as a constant food source—this species cannot survive without wood. Add caves, smooth rocks, and hardy plants such as Anubias or Java Fern. Strong filtration and high oxygenation are critical, as this species is large, produces substantial waste, and requires well-oxygenated water. Provide hiding places and a secure lid.

Water Parameters

Maintain soft to moderately hard water with pH 6.0-7.5 and temperatures between 24-30°C. General hardness (GH) of 3-10 dGH is ideal. The Golden Royal Pleco performs best in well-oxygenated water with strong current. Perform large weekly water changes of 30-50% to control nitrate and maintain stable parameters. Avoid stagnant water or poor filtration.

Feeding and Diet

Panaque cf. nigrolineatus is primarily a wood-grazer. Provide driftwood as a constant food source—without wood, health declines. Supplement with algae wafers, spirulina-based foods, blanched vegetables, and occasional protein-rich foods in small amounts. A constant supply of driftwood for rasping is essential for digestion and natural behavior. Feed supplemental foods once daily in small portions.

Behaviour and Personality

The Golden Royal Pleco is a peaceful, nocturnal catfish that spends most of its time grazing on driftwood and resting in caves. This species is generally non-aggressive but can be territorial toward other large plecos in undersized tanks. Provide ample hiding places and multiple territories to reduce competition. Most active during evening and early morning hours.

Tank Mates

Ideal tank mates include peaceful community fish of similar water requirements such as tetras, rasboras, Corydoras catfish, and peaceful dwarf cichlids. Avoid aggressive cichlids, fin-nipping fish, highly territorial bottom dwellers in small tanks, very small fish that may be stressed by competition, and other large plecos in undersized aquariums.

Breeding

Breeding is uncommon in home aquariums and usually requires very large, mature systems with excellent water quality, strong current, caves, and seasonal conditioning. Spawning behavior and fry rearing are poorly documented in captivity. If breeding occurs, males guard eggs in caves until hatching.

Why Buy from Tropical Fish Co

At Tropical Fish Co, we specialize in rare and specialist-level catfish, including the stunning Golden Royal Pleco. Every fish is quarantined, health-checked, and acclimatized to UK water conditions before dispatch. We provide expert guidance on large-scale tank setup, driftwood requirements, water chemistry, and compatible stocking to help you succeed with this demanding species. With fast, reliable delivery across the UK and a commitment to quality fishkeeping, Tropical Fish Co is your premier destination for exceptional freshwater fish.