Three beacon pleco
Leporacanthicus triactis
Also known as L091, Triactis vampire pleco
FreshwaterFish
Care at a glance
- Temperature
- 79–86°F
- 26–30°C
- pH
- 5.5–7.2
- Adult size
- 11 in
- 28 cm
- Minimum tank
- 106 gal
- 400 L
- Temperament
- Peaceful
- Social behavior
- Solitary
- Swim level
- Bottom
- Diet
- Carnivore
- Difficulty
- Medium
- Breeding
- Cave spawner · Medium
- Rarity
- Rare
- Family
- Loricariidae
- Origin
- Upper Orinoco, Venezuela and Colombia
Overview
The three beacon pleco is a large carnivore with bright orange fin tips, for a big tank with strong flow. It suits a keeper with some experience.
Did you know
The three beacon pleco's species name, triactis, means three rays. It refers to the orange tips that flash from the dorsal, adipose and tail fins as it sits in a cave mouth.
Caring for the three beacon pleco
Give a three beacon pleco a tank of at least 106 gal (400 L), over sand. Build it around large, stable stonework, with boulder caves big enough for an adult. Secure, generous rockwork matters for a big fish that holds and defends a cave.
Run strong flow, and keep the water clean and well oxygenated. Give it warm, soft water, slightly acidic to neutral, at 79 to 86°F (26 to 30°C) and a pH of 5.5 to 7.2.
Feed it as a carnivore, with sinking meaty foods such as prawn, mussel, bloodworm and snails. Add quality carnivore pellets, and offer vegetables only occasionally.
Keep just one per tank, with a roomy cave of its own, since it is territorial toward its own kind. It works the bottom by night and is peaceful toward tank mates it cannot eat. Choose midwater fish too large to be swallowed and too calm to compete on the floor.
Breeding it is of moderate difficulty. It is a cave spawner, and the male tends the eggs.
Good to know
Leporacanthicus triactis is a dark gray member of Loricariidae. Leporacanthicus are the so-called vampire plecos. They carry a pair of long teeth in the upper jaw, used to pry snails and soft prey from shells and crevices.
In the wild
The three beacon pleco lives among boulder caves and mud banks of the upper Orinoco, in Venezuela and Colombia. The water there is warm, soft and flowing.
Weekly picks
Tank mates
The three beacon pleco is a peaceful, solitary species that keeps to the bottom. These picks share a community profile with it, are safe together in both directions, and overlap on water type, temperature and pH.

Largescale four-eyed fish
Anableps anableps
FreshwaterBrackish11.8 in (30 cm) · 70 gal (265 L)77–88°F (25–31°C)
Red-tailed tinfoil barb
Barbonymus altus
Freshwater9.8 in (25 cm) · 106 gal (400 L)72–82°F (22–28°C)
Gold-spotted doradid
Wertheimeria maculata
Freshwater11.8 in (30 cm) · 106 gal (400 L)68–79°F (20–26°C)
Narrow hatchetfish
Triportheus angulatus
Freshwater9.8 in (25 cm) · 79 gal (300 L)73–82°F (23–28°C)
Rainbow bitterling
Acheilognathus macropterus
Freshwater10.6 in (27 cm) · 106 gal (400 L)57–79°F (14–26°C)
Wilder's mouse catfish
Hassar wilderi
Freshwater9.8 in (25 cm) · 106 gal (400 L)73–82°F (23–28°C)
Common questions
What size tank does a three beacon pleco need?
A three beacon pleco needs at least 106 gal (400 L). It spends most of its time in the bottom.
What temperature and pH does a three beacon pleco need?
A three beacon pleco is comfortable at 79–86°F (26–30°C) with a pH of 5.5–7.2.
What does a three beacon pleco eat?
A three beacon pleco is a carnivore that eats sinking meaty foods such as prawn, mussel, bloodworm and snails. Add quality carnivore pellets, with vegetables only occasionally.
How big does a three beacon pleco get?
An adult three beacon pleco reaches about 11 in (28 cm).
How does a three beacon pleco breed?
The three beacon pleco is a cave spawner, and the male tends the eggs. Breeding it is of moderate difficulty.
Related species
6.3 in (16 cm)79 gal (300 L)79–86°F (26–30°C)Golden vampire pleco
Leporacanthicus heterodon
6.3 in (16 cm) · 79 gal (300 L)
9.8 in (25 cm)66 gal (250 L)79–86°F (26–30°C)Vampire pleco (L029)
Leporacanthicus galaxias
9.8 in (25 cm) · 66 gal (250 L)
8.7 in (22 cm)66 gal (250 L)79–86°F (26–30°C)Sultan pleco (L264)
Leporacanthicus joselimai
8.7 in (22 cm) · 66 gal (250 L)
11.8 in (30 cm)119 gal (450 L)81–88°F (27–31°C)Mango pleco
Baryancistrus chrysolomus
11.8 in (30 cm) · 119 gal (450 L)
11.8 in (30 cm)119 gal (450 L)77–84°F (25–29°C)Spiny monster pleco
Pseudacanthicus spinosus
11.8 in (30 cm) · 119 gal (450 L)
10.2 in (26 cm)79 gal (300 L)77–84°F (25–29°C)Brown pleco
Hypostomus plecostomoides
10.2 in (26 cm) · 79 gal (300 L)
