Ancistrus mato grosso - lda 08 XL (Ancistrus mattogrossensis) — XL

Overview

The bristlenose pleco Ancistrus mattogrossensis, commonly known as the Mato Grosso bristlenose or LDA 08, is a peaceful, compact algae-grazing catfish native to freshwater rivers and tributaries in Brazil, South America. This small pleco reaches only 4 cm in adult size, making it one of the most suitable algae eaters for smaller planted community aquariums. Available for sale UK from Tropical Fish Co, these charming bottom-dwellers are prized for their manageable size, ease of care, and effective biofilm grazing. Unlike larger pleco species that can uproot plants or damage décor, Ancistrus mattogrossensis is gentle, unobtrusive, and perfect for tropical fish for sale UK enthusiasts seeking a functional yet attractive addition to their freshwater aquarium catfish collection.

Appearance

Ancistrus mattogrossensis displays a mottled brown and tan body with darker patterning that provides excellent camouflage against driftwood and rocks. Males develop characteristic bristles (odontodes) on the snout as they mature, while females remain smooth-faced or show only minimal bristle development. The body is covered in bony plates (scutes), giving the fish an armored appearance typical of the Loricariidae family. Their flattened ventral surface and sucker mouth allow them to cling to surfaces while grazing on biofilm and algae. Healthy specimens show clear eyes, intact fins, and a plump abdomen—signs of good nutrition and water quality.

Natural Habitat

In the wild, Ancistrus mattogrossensis inhabits fast-flowing rivers, rocky streams, and tributaries across Brazil's Mato Grosso region. These environments are characterized by clear, well-oxygenated water with a substrate of smooth stones, submerged wood, and leaf litter. The fish graze on biofilm, aufwuchs (organic micro-layers on surfaces), and algae growing on rocks and driftwood. Natural conditions include slightly acidic to neutral pH, warm temperatures, and high oxygen levels. During the dry season, populations concentrate in deeper pools, while the rainy season opens access to flooded forest areas rich in organic matter and hiding places.

Aquarium Setup

A minimum 40-litre aquarium is suitable for a small group of Ancistrus mattogrossensis, though larger tanks are always preferable to maintain stable water quality. Provide plenty of driftwood for grazing and hiding—this is essential, as the wood also aids digestion and provides necessary fiber. Smooth stones, caves, and PVC tubes offer additional shelter and potential breeding sites. Use a soft, sandy substrate or smooth gravel to protect their delicate barbels and ventral surface. Moderate to strong filtration with good water movement is ideal, as these fish appreciate well-oxygenated conditions. Live plants such as Java fern and Anubias thrive in the same parameters and add to the natural aesthetic.

Water Parameters

Bristlenose plecos from the Mato Grosso region thrive in water with a pH of 6.0-7.5 and temperatures between 22-28°C. Maintain excellent water quality with weekly partial water changes of 25-30%, keeping ammonia and nitrite at zero and nitrate below 20 ppm. Soft to moderately hard water is preferred, though captive-bred specimens are generally adaptable. Use a reliable aquarium heater and thermometer to maintain stable conditions, and ensure strong filtration with good surface agitation to maximize dissolved oxygen. Avoid sudden parameter shifts, which can stress the fish and trigger health issues such as ich or bacterial infections.

Feeding

Ancistrus mattogrossensis is primarily herbivorous, grazing on biofilm, algae, and plant matter. Offer algae wafers, spirulina-based sinking pellets, and blanched vegetables such as zucchini, cucumber, and spinach. Supplement with occasional protein-rich foods like bloodworms or brine shrimp to ensure balanced nutrition and support growth. Feed once daily in the evening, as these fish are most active at dusk and during the night. Remove uneaten vegetables after 24 hours to prevent water quality deterioration. While they graze on algae, do not rely solely on naturally occurring algae to feed them—supplemental feeding is essential for long-term health and bristlenose pleco breeding success.

Behaviour

Ancistrus mattogrossensis is a peaceful, nocturnal species that spends most of the day hiding in caves or clinging to driftwood. As evening approaches, they become more active, grazing surfaces and exploring the tank. Males can be mildly territorial with other males, especially when breeding, but aggression is typically limited to posturing and rarely results in injury. They are shy around bright lighting and sudden movements, so provide plenty of hiding spots to reduce stress. In well-planted tanks with ample cover, they may be seen resting on leaves or glass during the day. Their calm temperament makes them ideal companions for small peaceful community fish.

Tank Mates

Ideal bristlenose pleco tank mates include peaceful community fish such as small tetras, rasboras, Corydoras catfish, and dwarf cichlids like Apistogramma species. Avoid large aggressive cichlids, fin-nipping species, and highly territorial bottom fish that may harass or outcompete them for food and shelter. Shrimp and snails are generally safe, though very small shrimp fry may occasionally be consumed if the pleco is underfed. Multiple Ancistrus mattogrossensis can be kept together in larger tanks (80+ litres) with ample hiding spots, though provide one cave per male to minimize territorial disputes during breeding. Their compact size and gentle nature make them one of the best small pleco options for community setups.

Breeding

Ancistrus mattogrossensis can be bred in captivity with proper care and setup. Provide a cave or tube slightly larger than the male's body—terracotta pots, PVC pipes, or coconut shells work well. Males guard eggs laid inside the cave, fanning them with their fins to ensure oxygenation. Condition breeding pairs with high-quality foods including spirulina, blanched vegetables, and protein-rich treats. Slightly cooler water changes (1-2°C drop) can trigger spawning. Once the female lays eggs, the male takes over, and the female should be removed or left undisturbed. Eggs hatch in 4-7 days, and fry become free-swimming shortly after, feeding on aufwuchs and crushed algae wafers.

Why Buy from Tropical Fish Co

Tropical Fish Co is your trusted source for healthy, captive-bred bristlenose pleco for sale UK, including rare species like Ancistrus mattogrossensis. Each fish is quarantined, health-checked, and carefully acclimatized to ensure you receive robust, disease-free specimens ready to thrive in your aquarium. Our expert team provides personalized care advice, tank setup guidance, and ongoing support to help you succeed with these fascinating freshwater aquarium catfish. With secure packaging, next-day delivery across the UK, and a commitment to ethical sourcing, Tropical Fish Co is the best place to buy tropical fish online UK. Whether you're seeking a small pleco for a nano tank or a reliable algae grazer for your planted aquarium, our Mato Grosso bristlenose plecos deliver both function and beauty.