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L091, Three Beacon Pleco

Leporacanthicus triactis

The striking L091 'Three Beacon', so called for the bright orange spots on the dorsal, caudal, and adipose fins that contrast with the brown-black body.

Family
Loricariidae
Origin
Orinoco River Basin, Venezuela
Origin
Amazon, Orinoco, and Guianas
Tank use
Used in 0 tanks

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Species challenges
Temperature

25 °C - 29 °C

pH

6 - 7.4

Water type

Freshwater

Tank level

Bottom

Adult size

25 cm

Description

Geographic Origin and Biotope: Originating from the Orinoco River basin (Venezuela). Lives in the high-flow sections and rapids of the river, hiding among polished granite boulders or in the thick of logs wedged under the powerful water jet.

Taxonomy and Morphology: Three-beacon Pleco (L091 / Leporacanthicus triactis). Known for the three conspicuous colored "beacons" on its fins. Possesses the typical elongated snout and massive needle-like maxillary teeth of the "Vampire Plecos", useful for feeding on invertebrates.

Social Behavior: Strongly territorial nocturnal fish. Will not hesitate to aggressively defend its main den against other loricariids or bottom-dwelling fish. Tends to be more visible if reassured by numerous dark hiding places.

Coloration and Sexual Dimorphism: Chocolate brown to charcoal black body. The distinguishing feature is the three intense yellow or bright orange spots (beacons), located on the tip of the dorsal fin and on the lobes of the caudal fin. Males with a more angular head and large odontodes.

Care and observations

Aquarium Setup: Demands huge tanks (at least 120-150 cm / 48-60 inches). Fundamental to recreate a rheophilic river: powerful water currents, oversized filtration, large ceramic tubes for dens, and round boulders. No sharp gravel that would injure its soft belly.

Diet and Feeding: Predominantly carnivorous. In nature, it extracts snails and invertebrates. In the aquarium, feed it after lights out with whole clams, shelled shrimp, protein pellets for bottom fish, and occasional pieces of vegetables.

Water Quality: Very oxygenated, warm (25-29°C / 77-84°F), and pristine water. Fish of the genus Leporacanthicus are exceptionally intolerant to accumulations of nitrogenous waste (nitrates); massive and frequent water changes are mandatory.

Compatibility and Tankmates: Ideal for tanks with robust mid-water Cichlids (Severum, Geophagus, Uaru) or large South American characins. Avoid coexistence with small bottom fish that could be injured during nocturnal territorial disputes.

Aquarium Reproduction: Occurs in captivity in large caves. The male traps the female, fertilizes the huge yellow eggs, and cares for them by fanning them for weeks until the fry's yolk sac is absorbed.

Risks and Diseases: Lack of oxygen or insufficient filtration will quickly lead to asphyxia or severe fungal infections on the fins. It has a tendency to fatally wedge itself in rocks with holes that are too narrow.

Fish profile

Diet
Carnivore
Tank level
Bottom
Adult size
25 cm
Minimum tank
300 L
GH
2 dGH - 12 dGH
KH
2 dKH - 10 dKH
TDS
n/a
Conductivity
n/a

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