Species description

Care, breeding and tankmates

Fish profile

Temperament

Semi-aggressive

They possess a peaceful, albeit very shy and retiring temperament, often remaining completely hidden during daylight hours. Males will establish and defend small territories centered around a preferred cave, displaying harmlessly to rivals. Keeping the tank well-structured with plenty of visual barriers minimizes any stress from territorial disputes.

Diet

Omnivore

Their diet leans heavily towards carnivory, requiring a variety of high-quality sinking meat-based foods. Regular offerings of frozen bloodworms, daphnia, brine shrimp, and carnivore pellets will keep them healthy and vibrant. While they may occasionally nibble on biofilm, algae should never be considered a primary food source for them.

Sex ratio

Flexible

Sexually mature males are identifiable by their more prominent odontode growth on the first pectoral fin ray and cheeks. Males also present a slightly broader head profile when observed from directly above. Females are generally fuller in the belly, especially when gravid, and exhibit much shorter, stubbier odontodes.

Feeding frequency

Twice daily

Offer food once daily, ideally dropping sinking foods in after the aquarium lights have been shut off. Their nocturnal nature means they are most active and comfortable feeding in the dark. Aquarists must ensure that fast, greedy fish do not consume all the food before it reaches the bottom.

Bioload

This intricately patterned pleco generates a moderate bioload that is relatively easy to manage. Due to their carnivorous diet, their waste is more protein-dense, requiring established biological filtration to process effectively. Consistent weekly water changes are highly recommended to keep nitrates low and the fish in peak condition.

Flow

Stagnant

Originating from the Rio Demini, they appreciate moderate to moderately strong water flow and high dissolved oxygen. While they do not need torrential rapids, the water should be visibly moving and well-aerated. Using an airstone or pointing a filter output across the surface will easily meet their oxygen demands.

Reproduction

Oviparous

They are willing cave spawners when provided with excellent water quality and a protein-rich diet. The male selects a cave, courts the female, and after spawning, takes on the exclusive role of guarding the eggs. The male will tirelessly fan the eggs and protect the hatched fry until they leave the cave to forage.

Compatibility & tankmates

They are exceptional community fish, exhibiting a completely peaceful demeanor towards mid and top-water swimming species. They thrive alongside peaceful tetras, rasboras, and other gentle Amazonian fish species. They may occasionally squabble with other bottom dwellers over caves, but these interactions rarely lead to injury.

Tank level

Bottom

They are strict benthic fish that will spend their entire lives at the bottom level of the aquarium. A proper setup must include an abundance of caves, stacked rocks, and tangled driftwood for them to explore and claim. Without adequate hardscape to hide in, they will become highly stressed and prone to illness.