L66 King Tiger Pleco (Hypancistrus sp. L066) 4 Inches for Sale in Canada

The L66 King Tiger Pleco (Hypancistrus sp. L066) is a highly sought-after freshwater pleco known for its dramatic black-and-cream striped pattern, compact but robust body, and fascinating bottom-dwelling behaviour. This beautiful species is especially popular among pleco collectors and aquarists who appreciate rare and unusual catfish.

This listing is for an L66 King Tiger Pleco measuring approximately 4 inches. At this attractive size, the fish is already developing the bold pattern and powerful appearance that make L-number plecos so desirable in specialist freshwater aquariums.

The King Tiger Pleco is a member of the genus Hypancistrus and is often associated with fast-flowing habitats in the Rio Xingu region of Brazil. In the aquarium, it benefits from clean, warm, well-oxygenated water, strong filtration, and plenty of secure caves and hiding places.

Monster Aquarium Canada offers L66 King Tiger Plecos for aquarium hobbyists searching for rare plecos and unique freshwater fish in Canada.

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Why Choose an L66 King Tiger Pleco?

A Beautiful and Collectible L-Number Pleco

The L66 is admired for its distinctive appearance and specialist appeal.

Key Features

Premium Characteristics

• Approximately 4 inches in size
• Beautiful black and cream striped pattern
• Highly sought-after L-number pleco
• Fascinating nocturnal and cave-dwelling behaviour
• Excellent centerpiece pleco for a specialist aquarium
• Compact compared with many giant pleco species
• Strong, muscular body shape
• Popular among rare pleco collectors
• Beautiful addition to a warm, well-oxygenated aquarium

Pattern intensity can vary between individual fish. No two specimens look exactly alike.

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How Large Does an L66 King Tiger Pleco Grow?

A Manageable but Substantial Pleco

L66 King Tiger Plecos generally reach approximately 5–6 inches (12–15 cm) as adults.

Although they do not grow into giant plecos, they still require appropriate aquarium space, excellent water quality, and secure territories.

This 4-inch specimen is already a substantial fish and should be housed with its long-term adult requirements in mind.

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Aquarium Size and Setup

Create a Warm, Oxygen-Rich Environment

A 30-gallon aquarium or larger may be suitable for a single specimen, while a larger aquarium is recommended for multiple plecos or a community setup.

The aquarium should be mature and provide strong biological filtration.

Recommended Aquarium Features

• Mature biological filtration
• Excellent oxygenation
• Clean, stable water
• Moderate to strong water movement
• Driftwood
• Smooth rocks
• Multiple tight-fitting caves
• Shaded resting areas
• Fine or smooth substrate
• Secure hiding places

L66 plecos can be territorial around preferred caves, especially when keeping multiple individuals. Providing several separate hiding places can help reduce competition.

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Water Parameters

Basic L66 King Tiger Pleco Care

• Scientific Name: Hypancistrus sp. L066
• Common Name: L66 King Tiger Pleco
• Size Offered: Approximately 4 inches
• Potential Adult Size: Approximately 5–6 inches (12–15 cm)
• Origin: Brazil, Rio Xingu region
• Temperature: Approximately 26–30°C (79–86°F)
• pH: Approximately 5.5–7.5
• Water Hardness: Soft to moderately hard
• Care Level: Moderate
• Temperament: Generally peaceful but can be territorial with other plecos
• Diet: Omnivorous with a strong preference for protein-rich foods
• Swimming Level: Bottom
• Activity: Often more active during dim conditions and at night

Stable water quality and high oxygen levels are especially important for this species.

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What Does an L66 King Tiger Pleco Eat?

A Protein-Rich Omnivorous Diet

L66 King Tiger Plecos should not be treated as simple algae cleaners. They require a nutritious and varied diet.

Recommended Foods

• High-quality sinking carnivore pellets
• Pleco wafers formulated with quality ingredients
• Frozen bloodworms
• Brine shrimp
• Mysis shrimp
• Small crustacean-based foods
• Repashy-style gel foods where appropriate
• Other suitable protein-rich sinking foods

Offer food after lights are dimmed when necessary, especially if faster community fish compete for food.

Important Feeding Advice

Although some vegetable matter may be accepted, protein-rich foods should form an important part of the diet. Always remove uneaten food to help maintain excellent water quality.

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Behaviour and Temperament

A Fascinating Cave-Dwelling Pleco

The L66 King Tiger Pleco may spend much of the day resting inside caves, beneath driftwood, or in shaded areas.

As it becomes comfortable, you may observe it:

• Exploring the aquarium after lights dim
• Defending a favourite cave
• Searching surfaces and substrate for food
• Displaying territorial behaviour toward other plecos
• Becoming more visible during feeding

Individual personality and activity levels can vary.

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Compatible Tank Mates

Choose Warm-Water Species Carefully

Potential tank mates should tolerate the warm temperatures and highly oxygenated conditions preferred by L66 plecos.

Compatible species may include appropriately sized, peaceful fish that do not constantly harass the pleco or consume all sinking food.

Possible Considerations

• Peaceful South American cichlids
• Compatible medium-sized tetras
• Peaceful catfish
• Other suitable warm-water community fish

Avoid

• Highly aggressive fish
• Large predatory fish capable of eating the pleco
• Excessively territorial bottom dwellers
• Fish requiring much cooler water
• Species that constantly occupy or compete for every available cave

When keeping multiple plecos, provide sufficient space and more caves than fish whenever possible.

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L66 King Tiger Pleco in a Community Aquarium

A Striking Bottom-Dwelling Centerpiece

A 4-inch L66 King Tiger Pleco can become an exceptional feature fish in a carefully planned community aquarium.

Success depends on:

• Stable warm water
• High oxygen levels
• Powerful filtration
• Plenty of caves
• Appropriate tank mates
• Regular maintenance
• Sufficient access to food

Because this species may be shy, a quiet aquarium with secure hiding places often encourages more confident natural behaviour.

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Breeding L66 King Tiger Plecos

A Fascinating Cave-Spawning Pleco

Like many Hypancistrus species, L66 plecos are cave spawners. Breeding projects require correctly conditioned, compatible adults and carefully maintained aquarium conditions.

Helpful Breeding Considerations

• Multiple appropriately sized caves
• Excellent water quality
• Warm temperatures
• Strong oxygenation
• A nutritious protein-rich diet
• Stable environmental conditions
• Carefully selected breeding adults

Males may guard a preferred cave and play an important role in protecting developing eggs.

Breeding success can vary and should be approached as a specialist project rather than guaranteed.

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Why Buy L66 King Tiger Pleco from Monster Aquarium Canada?

Rare Plecos for Canadian Aquarium Hobbyists

Monster Aquarium Canada specializes in unusual freshwater fish, rare tropical fish, L-number plecos, monster fish, predator fish, aquarium foods, medications, and specialist aquarium supplies.

An Impressive 4-Inch Specimen

This L66 King Tiger Pleco at approximately 4 inches is an excellent choice for aquarists looking for a substantial, beautifully patterned pleco with a manageable adult size.

Before ordering, ensure your aquarium is mature and capable of providing warm, clean, oxygen-rich water and suitable long-term housing.

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Frequently Asked Questions

1. How big is this L66 King Tiger Pleco?

This listing is for a specimen measuring approximately 4 inches.

2. How large does an L66 King Tiger Pleco grow?

They generally reach approximately 5–6 inches (12–15 cm) as adults.

3. Does an L66 King Tiger Pleco eat algae?

It may graze on surfaces, but it should not be relied upon as an algae-cleaning fish. A varied, protein-rich diet is important.

4. Is the L66 King Tiger Pleco aggressive?

It is generally peaceful with other fish but can become territorial with other plecos, particularly around caves and hiding places.

5. What temperature does an L66 King Tiger Pleco need?

They generally do well in warm water, approximately 26–30°C (79–86°F), with excellent oxygenation and stable water quality.