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Tapajós Royal Pleco (L027)
Panaque armbrusteri
Known for a long time as L027 Tapajós. A gigantic (40 cm) and elite Panaque with a dark gold and mustard livery, surmounted by very thick interrupted black bands. Pure xylophage, it devastates wood and requires cyclopean tanks.
- Family
- Loricariidae
- Origin
- Sud America (Brasile, Rio Tapajós e bacini limitrofi)
- Origin
- Extra-Amazon South America
- Tank use
- Used in 0 tanks
Share
26 °C - 30 °C
6 - 7.4
Freshwater
Bottom
40 cm
Description
Geographic Origin and Biotope: Colossus endemic to the turbulent and crystalline Brazilian basins, specifically caught in the mighty Rio Tapajós. It lives in the nightmare of the rapids, firmly anchored to the gigantic submerged arboreal wrecks or wedged in niches of dark magma, where the clear and oxygenated water beats very hot under the equatorial sun without ever stopping.
Taxonomy and Morphology: Loricariidae family. For decades confusingly framed under the countless variants of the 'Panaque nigrolineatus' with the code L-027 (together with variants from Tocantins and Xingu), today this titan is a species in its own right: Panaque armbrusteri. The structure is cyclopean, an immovable prehistoric bony block that easily breaks through 40 centimeters (16 inches) and 2 kg (4.4 lbs) of weight. It preserves the deadly and highly specialized dental arsenal: large and powerful spatulate teeth, born exclusively to tear and pulverize heavy submerged woody barks.
Social Behavior: Ecstatic diurnal monolith. It will spend 90% of its existence perched, upside down or hidden, on its very personal, and defended, wooden stump. Peaceful, ignorant, and placid towards the fish in the water column, it mutates into a brutal and furious bulldozer if its living space (its root) is contended by another Panaque or giant Plecostomus. It will fight with devastating thorny headbutts until it blinds or mutilates the rival in insufficiently immense tanks (under 2 meters / 6.5 ft).
Coloration and Sexual Dimorphism: The designer outfit for which purists choose it over its L190 cousin. The eye is often gray-brown or weakly orange (not bright ruby). The base of the armored fish leans wonderfully towards shades of shiny ochre, opaque dark gold, bright mustard, or hazelnut brown (abandoning the gloomy olive-greens of its cousin). The black lines ('Royal stripes') are exaggeratedly thicker, denser, and more marked, often fused, asymmetrical, and broken, not neatly parallel. Dimorphism identical to the genus: only in very late age and at titanic sizes do MALES extract a crazy arsenal of bristly, very long hairy spikes ('odontodes'), fleshy and pungent from behind the cheeks and on the back of the body; hairless and corpulent females without such stunning lateral spears.
Care and observations
Tank Setup: THE LETHAL KILLER MISTAKE IS KEEPING IT SMALL. Juveniles are rare, but they grow eviscerating the volume. MANDATORY CYCLOPEAN TANKS of no less than 150-200 cm (60-80 inches) in length. THE ABSOLUTE LAW IS THE SCENOGRAPHY: Insert in the bottom titanic amounts of Mopani, massive bogwood roots (pure real wood). Without abundant, submerged wood to grate as the only source of life, it will collapse paralyzed. Water violently agitated on the surface by powerful wave-makers (recreating the strength of the Tapajós).
Feeding and Diet: ZERO ALGAE. IT IS A WOOD SHREDDER. It will eat your case swallowing layers of dead cellulose 24 hours a day and scraping the fungal microfauna inherent in it. The hunger of this beast is inexhaustible: integrate every holy night in the dark with hard vegetable tablets and heavy sinking Spirulina, colossal sunken vegetables (very heavy raw zucchini cut in half, aseptic boiled pumpkin). Disdain meat almost entirely if not rarely, under penalty of lethal putrefying colic and blocks of the herbivorous-xylophagous gastric system.
Water Quality: Difficulty EXCLUSIVELY dictated by the COLOSSAL ABOMINABLE POLLUTION. You will never be able to imagine the boundless daily amount in meters of disgusting woody poop (extruded sawdust) that it generates by digesting trunks. IT DEMANDS an owner devoted to constant siphoning and triple external industrial canister filters so as not to faint from ammonia peaks. Unlike the L190, the Armbrusteri lives in asphyxiating heat: IT DEMANDS constant tropical 26°C to 30°C / 79-86°F (scorching water) and would die constipated in the careless winter 23-24°C / 73-75°F. Prefers weak soft waters (GH 2-12) and Amazonian subacid-neutral pH (6.0-7.4).
Compatibility and Cohabitation: Giant model of excellence for the calm of a huge showcase community. Spectacular combined in the shadow of elite fish: large and very hot slow and majestic round Discus (withstands their crazy 29°C / 84°F temperatures), powerful earth-eating Uaru of the shade, Geophagus, or very dense very thick schools of fast South American Amazonian Tetras and Angelfish. STRICTLY PROHIBITED and morally unjust to mix it with the psychotic nervous chaos of very hard African Mbuna Cichlids, OR bone-breaking Central American Cichlids that would bite and wound it.
Aquarium Reproduction: Absolute impossible myth in the domestic living room given the monstrous size required and the aggressive isolation. Churned out almost exclusively asphyxiating from captured Amazonian rivers or reproduced by chemical avalanche in immense turbid lagoons of hot asphyxiating muds in Asia for global sales and massive reproductions external to pure hobbyist breeding.
Risks and Diseases: Lethal Rotten Intestinal Occlusion for fake asphyxiating diet without wood or digestive block of slow asphyxiating paralyzing freezing atrophy if bred careless at cool and low temperatures under 25 degrees (77 F) by careless owners in winters; Asphyxiating Lethal Fulminating Asphyxia: if the cyclopean novice weak biological filters drop dead collapsing dead and ruined by the boundless unsustainable bulk and abyssal quintals of woody shit sawdust foolish excrement that this mastodon shitter extrudes day and night without mercy causing lethal intoxications of furious ammonia that exterminates the entire huge tank silently and bitterly languid drowned.
Fish profile
- Tank level
- Bottom
- Adult size
- 40 cm
- GH
- 2 dGH - 12 dGH
- KH
- n/a
- TDS
- n/a
- Conductivity
- n/a
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.

