Species description

Care, breeding and tankmates

Fish profile

Temperament

Semi-aggressive

They exhibit a peaceful but somewhat shy temperament, preferring the safety of their caves during daylight hours. Males will defend their chosen caves from other bottom dwellers, displaying their fins to intimidate rivals without causing harm. A well-structured tank with plenty of hiding spots ensures they feel secure and minimizes any territorial disputes.

Diet

Omnivore

As strict carnivores, their diet must revolve around high-quality, protein-dense foods rather than plant matter. Provide a varied menu of frozen bloodworms, mysis shrimp, specialized sinking carnivore pellets, and chopped seafood. They have virtually no interest in algae or wood, so relying on these as food will lead to starvation.

Sex ratio

Group

Mature males are visibly distinct, possessing significantly longer and denser odontode growth on their pectoral fins and cheeks. Males also tend to have a broader, more robust head shape, whereas females have a rounder midsection. Establishing a group with a ratio of 1 male to 2 or 3 females often yields the best breeding success.

Feeding frequency

Twice daily

Feeding should occur once daily, optimally provided after the main aquarium lights have been turned off for the night. They are nocturnal foragers and are far more confident searching for food in the dark. It is crucial to ensure food is dropped near their hiding spots so they can easily find it.

Bioload

This highly sought-after pleco produces a moderate bioload typical of medium-sized Loricariids on a carnivorous diet. Their meaty waste requires excellent biological filtration to process ammonia and nitrites swiftly. Diligent tank maintenance, including weekly water changes and substrate vacuuming, is necessary to keep them thriving.

Flow

Stagnant

Native to the fast-flowing waters of the Rio Iriri, they absolutely require strong water current and superb oxygenation. The use of robust powerheads and aggressive surface agitation is highly recommended for their long-term health. Warm water holds less oxygen, making vigorous aeration critically important for this warm-water species.

Reproduction

Oviparous

They are typical cave spawners, and breeding is highly achievable if provided with pristine water and a high-protein diet. Males will claim a tight-fitting ceramic or slate cave, coax a female inside, and subsequently aggressively guard the eggs. The male alone cares for the eggs and fry until they are fully free-swimming.

Compatibility & tankmates

They are peaceful, community-friendly bottom dwellers that will ignore fish swimming in the mid to upper water column. Excellent tank mates include peaceful tetras, corydoras, and dwarf cichlids that share similar temperature requirements. They should not be housed with aggressive, highly active bottom feeders that will constantly outcompete them for food.

Tank level

Bottom

They are entirely bottom-dwelling fish that will lay claim to specific caves or crevices within the hardscape. They require a tank extensively decorated with stacked slate, ceramic spawning caves, and complex driftwood arrangements. They will rarely, if ever, venture into the open middle or upper layers of the water column.