Water parameters
Overview
The three beacon pleco is recognized by its dark body and the bright orange-yellow patches on its unpaired fins; the name "three beacons" comes from these patches, and the colors are retained in adults as well. It is known from the upper Orinoco, in Colombia and Venezuela.
Adults reach 24–25 cm standard length and 28–30 cm including the tail. Like other members of its genus, it is a carnivorous species that hunts snails and crustaceans with its long upper teeth.
Tank Setup
- At least 300 liters and a 120 × 45 cm footprint for one adult.
- Soft, slightly acidic water; a strong filter and flow.
- Large caves that fit its body and rock piles; 26–28°C.
Diet
Carnivorous. Make pieces of mussel, shrimp and fish, krill, bloodworms and protein-rich sinking tablets the staple. It loves snails; it accepts small amounts of vegetables.
Behavior and Compatibility
Nocturnal and territorial. It can be aggressive toward its own kind and other plecos; it defends its cave fiercely. It eats shrimp and snails.
Good companions: Medium and large fish that like soft water: large tetras, Geophagus species, medium-sized cichlids.
Avoid: Shrimp, snails, other plecos (in limited space), small and slow bottom dwellers.
A short profile for this species
The Three Beacon Pleco (L091) page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.
Tank mates
This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.
Usually compatible
Emerald Betta
Altum Angelfish
Firemouth Cichlid
Buffalohead Cichlid
Chocolate Cichlid
Festivum
Rainbow Cichlid
Pearl Cichlid
Threadfin Acara
Should not be kept together
Hobbyist notes
Things you won't find in books, learned by trial and error. The most helpful ones are on top.
Change history and contributors
- Page created · October 16, 2026







