Brokenline Royal Plec L191 Care Guide - Tank Setup, Diet & Breeding

The Brokenline Royal Plec L191 is a striking large loricariid with a deep-bodied profile, an armoured underside and a broad sucker-shaped mouth. Its dark brown to nearly black body is marked with pale, broken horizontal lines, creating the irregular pattern that gives this fish its common name. The dorsal and caudal fins may also show contrasting edging or striping.

Panaque sp. L191 originates from the middle and upper Orinoco basin in Colombia, South America. It is associated with warm, flowing tributaries and river habitats containing submerged wood and rocky structure.

A single adult should have an aquarium of at least 400 litres, with a footprint of roughly 150 cm by 50 cm; a larger tank is preferable as this species grows substantial and produces considerable waste. Use smooth sand or fine rounded gravel, provide several caves and shaded retreats, and include a large piece of mature driftwood for grazing and rasping. Strong filtration, good circulation, high oxygen levels and secure decor are important, while open swimming space should be retained around the structure.

Up to around 35 cm (14 inches) in total length. Females are often slightly deeper-bodied and heavier than males, while males may appear more robust around the head and pectoral fins.

This species is adapted to a largely herbivorous, wood-focused diet. Offer constant access to natural driftwood, along with sinking foods containing spirulina or other vegetable matter, algae wafers, courgette, cucumber, green beans and occasional leafy vegetables. Supplement the diet with small amounts of high-quality sinking foods and occasional protein-rich offerings, but do not rely on algae alone; uneaten food should be removed before it spoils.

Brokenline Royal Plecs are generally peaceful towards fish that occupy different parts of the aquarium, although large adults can become territorial towards other plecos and similar bottom-dwellers. Suitable companions include robust tetras, larger rasboras, peaceful barbs, medium-sized South American cichlids, larger gouramis and other calm community fish that appreciate warm, well-oxygenated water. Avoid very small fish that could be disturbed by a large adult, fin-nippers, aggressive cichlids and keeping multiple large plecos together unless the aquarium provides substantial territory and separate hiding places.

Breeding Brokenline Royal Plecs is uncommon in home aquariums and usually requires a mature, spacious setup with excellent water quality and several compatible adults. They are cave-spawning catfish: the female deposits eggs inside a narrow cavity, after which the male typically guards and fans them until they hatch. The fry should be offered soft, nutritious foods and plentiful driftwood as they develop.

Sexing young Brokenline Royal Plecs is difficult. Mature males may develop more pronounced odontodes, or bristle-like growths, on the pectoral fins, head and body, whereas females are usually broader through the abdomen and have fewer obvious odontodes.