L519 Rio Itenez Bristlenose (Ancistrus sp. “Kiefneri”) for Sale in Canada
The L519 Rio Itenez Bristlenose Pleco (Ancistrus sp. “Kiefneri”) is a rare and fascinating L-number catfish for aquarists looking beyond the commonly available Bristlenose Pleco varieties. With its distinctive appearance, armoured body, sucker mouth, and characteristic Ancistrus features, the L519 is an exciting addition to a specialist pleco collection or carefully planned South American freshwater aquarium.
The Rio Itenez Bristlenose is associated with the Rio Iténez region of South America and is valued by pleco enthusiasts for its rarity and unusual appearance. Like other members of the Ancistrus group, this fish spends much of its time exploring the aquarium’s lower areas, grazing across surfaces, resting on driftwood, and searching for food.
This species is an excellent choice for hobbyists who appreciate unusual L-number plecos but want a fish with a more manageable size than many giant-growing Loricariid species.
Monster Aquarium Canada offers the L519 Rio Itenez Bristlenose for aquarium hobbyists searching for rare plecos and unique freshwater fish in Canada.
Why Choose an L519 Rio Itenez Bristlenose?
A Rare and Collectible Ancistrus Pleco
The L519 offers the fascinating behaviour associated with Bristlenose Plecos while adding rarity and collector appeal.
Key Features
Premium Characteristics
- Rare L-number pleco
- Distinctive Rio Itenez Ancistrus
- Fascinating armoured body
- Characteristic sucker mouth
- Bristlenose-type appearance
- Excellent specialist pleco
- More manageable than giant pleco species
- Interesting bottom-dwelling behaviour
- Suitable for a carefully planned freshwater aquarium
Individual colour, pattern, and development can vary depending on age, sex, genetics, health, diet, and aquarium conditions.
How Large Does the L519 Rio Itenez Bristlenose Grow?
A More Manageable Pleco Species
The L519 Rio Itenez Bristlenose is generally expected to remain significantly smaller than common giant plecos, with adults reaching approximately 4–6 inches (10–15 cm).
Exact adult size may vary between individual fish, and scientific information for uncommon L-number populations can be limited.
Always plan your aquarium around the potential adult size and provide sufficient floor space, filtration, and shelter.
Aquarium Size and Setup
Create a Mature Pleco-Friendly Aquarium
A 30-gallon aquarium or larger is a reasonable starting point for a single adult specimen, while larger aquariums are recommended for community setups or multiple bottom-dwelling fish.
Recommended Aquarium Features
- Mature biological filtration
- Stable, clean water
- Good oxygenation
- Gentle to moderate water movement
- Natural driftwood
- Smooth rocks
- Multiple caves
- Shaded resting areas
- Fine or smooth substrate
- Open bottom space
Driftwood and natural décor can help create a more secure environment while providing surfaces for exploration and grazing.
Water Parameters
Basic L519 Rio Itenez Bristlenose Care
- Scientific Name: Ancistrus sp. “Kiefneri”
- Common Name: L519 Rio Itenez Bristlenose
- L-Number: L519
- Potential Adult Size: Approximately 4–6 inches (10–15 cm)
- Origin: Rio Iténez region, South America
- Temperature: Approximately 24–28°C (75–82°F)
- pH: Approximately 6.0–7.5
- Water Hardness: Soft to moderately hard
- Care Level: Moderate
- Temperament: Generally peaceful
- Diet: Omnivorous
- Swimming Level: Bottom
- Activity: Often more active during dim conditions
Stable water quality is essential for long-term success with rare pleco species.
What Does an L519 Rio Itenez Bristlenose Eat?
A Varied Omnivorous Diet
The L519 should receive a balanced diet and should not be expected to survive exclusively on naturally occurring aquarium algae.
Recommended Foods
- High-quality sinking pleco pellets
- Algae wafers
- Spirulina-based foods
- Vegetable-based sinking foods
- Suitable protein-rich foods
- Repashy-style gel foods where appropriate
- Blanched vegetables in moderation, depending on individual acceptance
Important Feeding Advice
Offer a variety of foods and monitor that the pleco receives sufficient nutrition when housed with other bottom-feeding fish.
Remove uneaten food regularly to maintain excellent water quality.
Behaviour and Temperament
A Peaceful and Fascinating Bottom Dweller
L519 Rio Itenez Bristlenose Plecos are generally peaceful but, like many plecos, may defend a preferred cave or resting location.
They may spend time:
- Grazing on aquarium surfaces
- Resting beneath driftwood
- Exploring the substrate
- Hiding inside caves
- Becoming more active during the evening
- Searching for food after lights are dimmed
Providing multiple hiding places can help reduce territorial competition.
Compatible Tank Mates
Choose Peaceful, Compatible Species
Potential tank mates may include appropriately sized peaceful fish that tolerate similar aquarium conditions.
Possible companions can include:
- Peaceful tetras
- Rasboras
- Compatible Corydoras
- Peaceful dwarf cichlids
- Other suitable community fish
Avoid
- Large predatory fish
- Highly aggressive cichlids
- Excessively territorial bottom dwellers
- Fish requiring drastically different water conditions
When keeping multiple plecos, provide adequate space and several separate shelters.
L519 Rio Itenez Bristlenose in a Planted Aquarium
An Interesting Addition to a Natural Setup
The L519 can work well in a mature planted aquarium when the setup provides enough bottom space and suitable hiding places.
Consider including:
- Sturdy live plants
- Driftwood
- Smooth stones
- Natural caves
- Shaded areas
- Open grazing surfaces
- Efficient filtration
Choose a layout that provides both cover and sufficient room for normal bottom-dwelling behaviour.
Why Buy L519 Rio Itenez Bristlenose from Monster Aquarium Canada?
Rare Plecos for Canadian Aquarium Hobbyists
Monster Aquarium Canada specializes in rare freshwater fish, unusual tropical fish, L-number plecos, Bristlenose Plecos, monster fish, aquarium foods, medications, and specialist aquarium supplies.
A Unique Pleco for Serious Collectors
The L519 Rio Itenez Bristlenose is an excellent choice for aquarists looking for a rare Ancistrus species with collector appeal and a relatively manageable adult size.
Before ordering, ensure your aquarium is mature and capable of providing stable water conditions, strong filtration, suitable hiding places, and appropriate long-term care.
Frequently Asked Questions
1. How large does the L519 Rio Itenez Bristlenose grow?
It is generally expected to reach approximately 4–6 inches (10–15 cm), although individual growth can vary.
2. Is L519 a type of Bristlenose Pleco?
Yes. The L519 is an Ancistrus species commonly referred to as the Rio Itenez Bristlenose.
3. What does the L519 Rio Itenez Bristlenose eat?
It benefits from a varied omnivorous diet including quality sinking pleco foods, algae wafers, spirulina foods, vegetable-based foods, and suitable protein-rich items.
4. Is the L519 Rio Itenez Bristlenose peaceful?
It is generally peaceful with compatible fish but may become territorial around favourite caves or resting places.
5. What aquarium size does an L519 need?
A 30-gallon aquarium or larger is a reasonable starting point for a single adult, with larger aquariums recommended for community setups.




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