L422 Hopliancistrus Plecostomus

L422 is an unidentified Hopliancistrus with a compact armoured body, broad head and pale spotting or mottling over a darker base. Strong cheek odontodes become more obvious in mature fish.

Use the L-number identification L422 together with the current assignment Hopliancistrus sp. (L422). Do not merge it with visually similar forms without matching collection locality and diagnostic features. The L-number remains the principal stable identifier because the form is undescribed or not conclusively assigned.

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

Provide warm, clean and highly oxygenated water with brisk circulation, rock cover and several narrow caves or crevices. Strong filtration is needed to keep food and waste from collecting in the rockwork.

Usually secretive and territorial around shelter, particularly between males. It normally ignores peaceful midwater fish.

Can be kept singly. A pair or group requires several appropriately sized caves and enough floor area for every adult to feed without being trapped.

Mature males commonly defend caves and favoured feeding areas from similarly shaped loricariids.

Choose calm current-tolerant companions and avoid crowding the bottom with aggressive cave-spawning plecos. Each adult needs a separate refuge.

Maintain stable clean water with strong oxygenation. Warm water, protein-rich food, wood waste, and crowded hardscape can rapidly reduce oxygen and degrade water quality.

Offer a varied omnivorous diet with algae and vegetable-rich sinking foods, biofilm and regular small invertebrate foods. It should not be fed as a strict herbivore or carnivore.

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

A male-guarded cave or crevice spawning pattern is expected, but dependable breeding details for this coded form are limited. Treat breeding as a specialist project.