L064 Cactus Plecostomus

L064 is an unidentified cactus pleco with a heavily armoured body, powerful head and prominent spines or odontodes. Exact spotting and fin colour vary among coded forms, while small juveniles give little indication of the adult’s bulk.

This profile is identified by L064 and the current assignment Pseudacanthicus sp. (L064). Do not merge it with a visually similar L-number without matching collection locality and diagnostic features. The L-number remains the primary stable identifier because the form has not been formally described.

Mature males generally develop a broader head and stronger odontodes on the cheeks, pectoral fins and body. Females become fuller through the abdomen, but juveniles are difficult to sex.

Provide a very spacious aquarium with powerful filtration, high oxygenation, stable rockwork and large secure caves. Every structure must withstand a strong adult, and heavy feeding requires strict waste removal.

Predatory, nocturnal and often highly territorial with other loricariids. Adults can inflict serious injuries during disputes over caves, food or floor space.

Best kept singly unless the aquarium is exceptionally large and provides several widely separated territories.

Strongly territorial toward similarly shaped loricariids, especially mature males and fish competing for caves.

Use robust midwater companions and keep other plecos only in exceptionally spacious, divided layouts. Shrimp, snails, fry and weak bottom fish may be eaten or injured.

Maintain stable, clean, oxygen-rich freshwater. Strong filtration and gas exchange are essential because warm water, protein-rich feeding, and loricariid waste can reduce oxygen and impair water quality.

Feed a protein-rich diet based on quality carnivore pellets, crustacean and mollusc foods, with some plant matter for variety. It is not an algae-eating cleanup fish.

Feed after lights dim and place food near every occupied cave. Confirm that subordinate fish eat, and remove rich leftovers before they affect water quality.

Pseudacanthicus are male-guarded cave spawners, but reliable breeding details for this coded form may be limited. Pair aggression, large caves and excellent water quality make breeding an advanced task.