Ancistrus sp. “Rio Paraguay” L528 – Rare Bristlenose Pleco

Ancistrus sp. “Rio Paraguay” L528 is a unique and rare species of bristlenose pleco originating from the Rio Paraguay basin in South America. This fascinating freshwater catfish is highly valued in the aquarium hobby for its distinctive body pattern, hardy nature, and excellent algae-cleaning ability.

Unlike larger plecos, Ancistrus species remain relatively small and are much better suited for planted aquariums and community tanks. The L528 variety features a beautiful combination of earthy brown tones with subtle spotting or patterning that allows it to blend naturally into aquascapes with driftwood, rocks, and plants.

Like other bristlenose plecos, mature males develop characteristic facial bristles (tentacles) around the snout, giving them their distinctive appearance. Females typically have fewer or smaller bristles and a slightly rounder body shape.

Ancistrus sp. “Rio Paraguay” L528 is an active bottom-dweller that spends most of its time grazing on algae, biofilm, and leftover food, helping maintain a cleaner aquarium environment.

Key Features

• Rare Ancistrus L-number pleco (L528)

• Natural algae eater and tank cleaner

• Unique body coloration and subtle pattern

• Hardy and beginner-friendly species

• Ideal for planted aquariums and community tanks

• Small size compared to common plecos

• Interesting bristled snout in mature males

Size

• Adult size: 10 – 12 cm

• Juveniles are typically 3 – 5 cm when sold

• Males develop larger facial bristles than females

Temperament

Ancistrus L528 is generally peaceful but can be mildly territorial with other bottom dwellers.

• Peaceful with most community fish

• May show territorial behavior toward other plecos

• Best kept single or as a breeding pair unless the tank is large

• Active mostly during evening and night

Water Conditions

Stable freshwater parameters help maintain health and coloration.

• Temperature: 23 – 28°C (73 – 82°F)

• pH: 6.0 – 7.5

• GH: 3 – 12 dGH

• Ammonia/Nitrite: 0 ppm

• Nitrate: < 20 ppm

Perform 20–30% weekly water changes to maintain optimal water quality.

Tank Setup

Ancistrus sp. “Rio Paraguay” L528 thrives in aquariums with natural décor and hiding spots.

• Driftwood (important for digestion and grazing)

• Live plants for natural cover

• Caves or tubes for hiding and breeding

• Rock structures to create territories

• Moderate filtration with gentle flow

Minimum recommended tank size: 80 liters (~20 gallons) for a single specimen.

Feeding Habits

Ancistrus L528 are omnivorous with strong herbivorous tendencies.

Recommended foods include:

• Algae wafers and sinking pleco pellets

• Blanched vegetables (zucchini, cucumber, spinach)

• Frozen foods (bloodworms, brine shrimp occasionally)

• Natural algae and biofilm

Feed once daily, preferably in the evening when they become more active.

Tank Mates

Ancistrus L528 is suitable for most peaceful community fish.

Suitable tank mates:

• Tetras

• Rasboras

• Angelfish

• Corydoras catfish

• Dwarf cichlids

Tank mates to avoid:

• Large aggressive cichlids

• Highly territorial bottom dwellers

• Fish that may harass plecos

Care and Maintenance

• Provide driftwood for natural grazing

• Maintain stable water parameters

• Perform regular water changes

• Offer vegetable-based foods regularly

• Provide hiding spots or caves

With proper care, Ancistrus sp. “Rio Paraguay” L528 can live 5–8 years in captivity.

Why Choose Ancistrus L528?

• Rare L-number bristlenose pleco

• Excellent algae eater for planted tanks

• Small size compared to common plecos

• Unique appearance with facial bristles

• Hardy and suitable for community aquariums

Ancistrus sp. “Rio Paraguay” L528 is an excellent addition to planted aquariums and community tanks. Its unique appearance, algae-cleaning ability, and manageable size make it a favorite among aquarists seeking both beauty and functionality in their aquarium ecosystem. 🐟🌿