⚫ L201 Orinoco Angel Pleco – (Hypancistrus sp. L201) – Wild-Caught Spotted Orinoco Pleco

The L201 Orinoco Angel Pleco (Hypancistrus sp. L201) is a beautifully patterned South American pleco known for its dark brown to nearly black body covered with contrasting white, cream, yellowish, or occasionally pinkish spots.

The spots extend across much of the:

• Head
• Body
• Dorsal fin
• Pectoral fins
• Pelvic fins
• Caudal fin

and can vary considerably in:

• Size
• Number
• Color
• Distribution

between individual fish.

Juveniles often appear to have relatively large spots, while those same spots may look proportionally smaller as the fish grows.

L201 originates from the:

UPPER RIO ORINOCO BASIN

along the Venezuela–Colombia region.

Despite frequently being sold under the name Hypancistrus contradens, the typical aquarium L201 is still best identified as:

Hypancistrus sp. L201

because specialists continue to recognize differences between true L201 and the formally described H. contradens.

The Orinoco Angel Pleco is a warm-water, oxygen-loving, cave-dwelling pleco that generally reaches approximately:

4–5 INCHES AS AN ADULT

It is a protein-leaning omnivore and should receive substantial animal and insect-based foods rather than being treated as an algae-cleaning pleco.

This listing is for:

WILD-CAUGHT L201 ORINOCO ANGEL PLECOS

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🔎 Quick Facts – L201 Orinoco Angel Pleco

• 📛 Common Name: Orinoco Angel Pleco
• 📛 Other Names: L201 Pleco, Orinoco Spotted Pleco, Colombian Snowball Pleco
• 🔢 L-Number: L201
• 🔬 Scientific Identification: Hypancistrus sp. L201
• 🧬 Taxonomic Status: Undescribed / unresolved
• 🐟 Family: Loricariidae
• 🧬 Subfamily: Hypostominae
• 🌿 Stock: Wild Caught
• 📏 Current Size: Approximately 2.5–3 inches
• 🌎 Origin: South America
• 🌊 Native Drainage: Upper Rio Orinoco Basin
• 🇻🇪 Primary Region: Venezuela
• 🇨🇴 Range Association: Venezuela–Colombia Orinoco region
• 💧 Water Type: Freshwater
• 📏 Typical Adult Size: Approximately 4–5 inches
• 🏠 Recommended Aquarium: 30 gallons or larger
• 👥 Groups: 40–55+ gallons preferred with substantial cave space
• 📐 Aquarium Shape: Long and wide tanks preferred
• 🌡️ Temperature: Approximately 79–86°F
• 💧 pH: Approximately 5.8–7.5
• 💦 Hardness: Soft to moderately mineralized
• 💨 Oxygenation: High
• 🌊 Water Movement: Moderate to Strong
• 🍽️ Diet: Protein-Leaning Omnivore
• 🦐 Animal / Insect Foods: Important
• 🌿 Plant Foods: Supplemental
• 🚫 Algae Cleaner: No
• 😌 Temperament: Generally peaceful and shy
• ⚠️ Pleco Temperament: Mature males territorial around caves
• 🌙 Activity: Primarily nocturnal / crepuscular
• 🥚 Breeding: Cave Spawner
• 👨‍👧 Parental Care: Male guards the eggs and fry
• ⭐ Care Level: Intermediate
• 🌎 IUCN Status: Not Evaluated as an undescribed L-number form

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🧬 L201 Is Still an Undescribed Hypancistrus

One of the most important corrections for this product is the scientific name.

The safest identification remains:

Hypancistrus sp. L201

The abbreviation:

sp.

means the fish belongs to the genus Hypancistrus, but its exact species identity has not been formally resolved.

Therefore:

DO NOT AUTOMATICALLY CHANGE L201 TO Hypancistrus contradens.

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⚠️ L201 vs. Hypancistrus contradens

This is one of the most confusing identification problems involving Orinoco Hypancistrus.

The formally described species:

Hypancistrus contradens

was described in:

2007

from Venezuela's:

RIO VENTUARI / UPPER ORINOCO REGION

It is a valid scientific species.

However:

TRUE L201 IS GENERALLY STILL TREATED AS A DIFFERENT, UNDESCRIBED FORM.

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🆚 Typical L201

L201 generally has:

• Lower body profile
• Shorter head
• More compact appearance
• White to cream or yellowish spots
• Adult size generally around 4–5 inches

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🆚 Hypancistrus contradens

H. contradens generally develops:

• Higher body profile
• Longer or larger head
• Heavier body
• Larger white or pinkish spots
• Larger adult size

Large-spotted H. contradens are sometimes sold incorrectly as:

“L201 BIG SPOT”

or:

“L201A”

which has contributed greatly to the confusion.

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⚠️ Do Not Mix L201 & H. contradens Breeding Lines

Even when they arrive together from exporters:

KEEP THEM SEPARATE IF BREEDING

Mixing similar Hypancistrus can result in offspring whose identity becomes impossible to verify.

Preserve:

• L-number
• Supplier identification
• Wild locality when known
• Parent records
• Breeder-line information

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🆚 L201 vs. L102 Snowball Pleco

Another fish commonly confused with L201 is:

L102 – Hypancistrus inspector

Both are dark plecos covered with pale spots.

However, H. inspector typically has:

DARK, UNSPOTTED MARGINS

along portions of the:

• Dorsal fin
• Caudal fin

L201 generally has pale spots extending much farther into those fins.

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🆚 L201 vs. L471 Mini Snowball Pleco

The:

L471 Mini Snowball Pleco

also looks extremely similar.

One major practical difference is size.

L471 generally remains:

SMALLER

while L201 grows to approximately:

4–5 INCHES

L471 usually tops out closer to the 3-inch range.

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🎨 Appearance

The L201 generally has a:

• Dark chocolate
• Deep brown
• Charcoal
• Nearly black

body.

The pale spots may appear:

• White
• Cream
• Pale yellow
• Golden cream
• Occasionally pinkish

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⚪ Spot Size Varies

Different specimens may show:

• Many small spots
• Fewer medium-sized spots
• Relatively large spots

Juvenile fish often appear to have especially large spots relative to their body size.

As they grow:

THE SPOTS MAY APPEAR PROPORTIONALLY SMALLER

because the body expands faster than the spot pattern.

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🟡 Yellow-Spotted L201

Some L201 develop spots that appear:

• Cream-yellow
• Golden
• Pale orange-yellow

rather than pure white.

This does not automatically indicate a different species.

Spot coloration can be influenced by:

• Genetics
• Diet
• Aquarium lighting
• Background color
• Stress
• Water conditions

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⚠️ Color & Pattern Disclaimer

Exact adult pattern cannot be guaranteed.

Individual wild fish may differ in:

• Spot size
• Spot density
• Spot coloration
• Body darkness
• Fin pattern

Shipping stress can also cause the body to temporarily become:

• Gray
• Brown
• Pale

rather than deep black.

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🌎 Native Distribution

L201 originates from the:

UPPER RIO ORINOCO BASIN

in northern South America.

Specialist records particularly associate the fish with the:

• Upper Orinoco
• Rio Ventuari region
• Venezuela–Colombia border region

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🇻🇪 Venezuela & 🇨🇴 Colombia

The Orinoco drainage extends through both:

• Venezuela
• Colombia

and wild ornamental fish from this region may enter the aquarium trade through exporters in either country.

For the product page, the safest origin description is:

UPPER RIO ORINOCO BASIN – VENEZUELA & COLOMBIA REGION

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🪨 Natural Habitat

L201 inhabits warm river environments associated with:

• Rocks
• Bedrock
• Crevices
• Cavities
• Moving water
• High dissolved oxygen

These rocky shelters provide:

• Daytime hiding areas
• Territories
• Feeding zones
• Breeding caves

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🏠 Aquarium Setup

A good L201 aquarium should contain:

• Smooth rocks
• Slate
• Rock piles
• Ceramic caves
• Pleco tubes
• Driftwood
• Sand or smooth gravel
• Shaded areas
• Strong filtration
• High oxygenation

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🏠 Caves Are Essential

L201 spends substantial time inside protected shelters.

Provide:

MORE CAVES THAN PLECOS

when maintaining a group.

Suitable caves include:

• Ceramic pleco caves
• Slate caves
• Rock crevices
• One-ended pleco tubes
• Driftwood cavities

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📏 Adult Size

Specialist references generally place adult L201 around:

10–12 CM

or approximately:

4–5 INCHES

Therefore:

4–5 INCHES

is a good adult planning range.

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⚠️ Do Not Confuse It With Larger H. contradens

If a spotted “L201” grows substantially larger and develops a very heavy, high-backed body with very large spots, re-check the identification.

It may actually be:

Hypancistrus contradens

rather than true L201.

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🏠 Aquarium Size

For one adult or a compatible pair:

30 GALLONS OR LARGER

works well.

For a group:

40–55+ GALLONS

is preferred.

The aquarium should prioritize:

• Bottom area
• Caves
• Territories
• Feeding areas

rather than excessive height.

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📐 Aquarium Footprint Matters

A longer aquarium offers more useful habitat than a short, tall tank.

A larger footprint allows:

• More caves
• More feeding areas
• Greater territory separation
• Reduced male conflict

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🌡️ Warm-Water Pleco

L201 prefers relatively warm water.

A practical range is:

79–86°F

Specialist sources generally maintain the species around:

25–30°C / 77–86°F

with breeding often occurring toward the warmer end.

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💨 HIGH OXYGENATION

Warm water naturally carries less dissolved oxygen.

L201 also originates from flowing river habitat.

Therefore:

HIGH DISSOLVED OXYGEN IS VERY IMPORTANT

Recommended methods include:

• Strong surface agitation
• Air stones
• Sponge filters
• Powerheads
• Canister-filter returns
• Sump returns

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🌊 Water Movement

Provide:

MODERATE TO STRONG WATER MOVEMENT

especially around:

• Caves
• Rockwork
• Filter returns

The aquarium should also include sheltered areas where fish can rest outside the strongest flow.

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💧 Water Parameters

A practical maintenance range is:

• 🌡️ Temperature: 79–86°F
• 💧 pH: Approximately 5.8–7.5
• 💦 Hardness: Soft to moderately mineralized
• 💨 Oxygenation: High
• 🌊 Flow: Moderate to Strong
• ☠️ Ammonia: 0 ppm
• ☠️ Nitrite: 0 ppm
• 🔄 Nitrate: Keep low

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⚠️ Low Nitrate Is Important

L201 does not tolerate deteriorating water quality particularly well.

Avoid:

• Excess nitrate
• Accumulated waste
• Low oxygen
• Dirty substrate
• Poor filtration

Regular partial water changes are strongly recommended.

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💩 Filtration

Suitable filtration may include:

• Canister filters
• Sump filtration
• Sponge filtration
• Powerheads
• Strong biological filtration

The goal is:

CLEAN + WARM + HIGHLY OXYGENATED WATER

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🍽️ Diet – Protein-Leaning Omnivore

L201 should not be treated as a typical algae-eating pleco.

It is:

LARGELY CARNIVOROUS / PROTEIN-LEANING

while still capable of consuming some plant material.

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🦐 Recommended Protein Foods

Suitable foods include:

• Mysis shrimp
• Brine shrimp
• Bloodworms
• White mosquito larvae
• Black mosquito larvae
• Krill
• Cyclops
• Chopped shrimp
• Insect-based sinking foods
• Quality carnivore pellets
• High-quality omnivore tablets

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🌿 Plant Foods

Some plant foods may still be accepted.

Suitable options include:

• Spirulina-containing wafers
• Vegetable-containing pleco foods
• Zucchini
• Cucumber

Juveniles may consume plant foods more readily than mature adults.

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🚫 Not an Algae Cleaner

L201 should:

NOT BE PURCHASED FOR ALGAE CONTROL

It will make little meaningful impact on aquarium algae compared with specialized algae-grazing plecos.

Intentional feeding is required.

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⚠️ Avoid Feeding Only Vegetables

An L201 diet based primarily on:

• Zucchini
• Cucumber
• Algae wafers

does not properly reflect the species' nutritional preference.

Animal and insect protein should form:

A MAJOR PART OF THE DIET

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🍽️ Poor Food Competitor

L201 can be:

SHY

and may lose food to faster aquarium fish.

Avoid extremely boisterous tankmates.

Feed:

• Close to caves
• At dusk
• After lights dim
• In several locations

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🌙 Activity

L201 is primarily:

NOCTURNAL / CREPUSCULAR

It may spend much of the daylight period:

• Inside caves
• Under rocks
• Beneath driftwood

Activity normally increases:

• At dusk
• During feeding
• After lights out

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🧪 Wild-Caught Acclimation

This listing is for:

WILD-CAUGHT L201 ORINOCO ANGEL PLECOS

Wild fish deserve careful acclimation.

After arrival:

• Keep lighting subdued
• Provide immediate caves
• Maintain high oxygen
• Avoid abrupt pH changes
• Avoid abrupt temperature changes
• Maintain excellent filtration
• Confirm that each fish begins feeding

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🍽️ Monitor Body Condition

A healthy L201 should maintain a:

• Full abdomen
• Solid body profile
• Good muscle mass

Watch for:

• Sunken belly
• Hollow body
• Loss of weight
• Persistent refusal to eat

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😌 Temperament

Toward most peaceful midwater fish, L201 is generally:

PEACEFUL AND SHY

Potential tankmates may include appropriately selected:

• Tetras
• Pencilfish
• Small characins
• Peaceful dwarf cichlids
• Other calm warm-water fish

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⚠️ Territorial Around Caves

Mature males may defend:

• Breeding caves
• Favorite shelters
• Feeding areas

against other L201s.

Most conflict is territorial rather than predatory.

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👥 Group Housing

L201 can be maintained successfully in groups when enough space is provided.

For groups:

• Provide numerous caves
• Provide more caves than fish
• Create visual barriers
• Feed in multiple locations
• Use adequate bottom space

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⚠️ Breeding Cave Trapping

One behavior worth knowing is that during courtship:

THE MALE MAY TRAP THE FEMALE INSIDE HIS CAVE

for an extended period before spawning.

This is normal reproductive behavior, but aggressive males can occasionally injure females.

Provide:

• Adequate aquarium space
• Multiple caves
• Good visual barriers

and observe breeding groups carefully.

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♂️ Male vs. Female

Sexual differences become clearer with maturity.

Mature Males

Generally develop:

• Broader head
• Longer head profile
• Stronger cheek odontodes
• Stronger pectoral-fin odontodes
• Odontodes along the rear body
• Strong cave territoriality

Mature Females

Generally:

• Have shorter odontodes
• Develop a broader abdomen
• Appear fuller when carrying eggs

Young fish may be difficult to sex accurately.

Unless confidently determined:

SELL AS UNSEXED

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🥚 Captive Breeding – Confirmed

L201 has been:

SUCCESSFULLY BRED IN HOME AQUARIUMS

It is a:

CAVE-SPAWNING PLECO

and makes an excellent breeding project for aquarists experienced with warm-water Hypancistrus.

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🏠 Breeding Caves

Provide several caves of slightly different:

• Diameter
• Length
• Shape

The male normally selects a cave that is:

• Closed at one end
• Slightly wider than his body
• Long enough for both adults
• Positioned in oxygen-rich moving water

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💕 Courtship

Typical breeding behavior includes:

1. The male establishes a cave.
2. A receptive female approaches.
3. The female enters.
4. The male may block the cave entrance.
5. The fish may remain together for several days.
6. Eggs are deposited and fertilized.
7. The female leaves or is pushed out.
8. The male remains with the clutch.

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👨‍👧 Male Parental Care

After spawning:

THE MALE GUARDS THE EGGS

He:

• Fans the clutch
• Protects the eggs
• Blocks the cave entrance
• Maintains water movement

The female normally provides no additional parental care.

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🥚 Clutch Size

Aquarium breeding reports document clutches of approximately:

40–50 EGGS

with around:

45 EGGS

reported as a typical successful spawn in some breeding accounts.

Actual clutch size depends on:

• Female size
• Age
• Conditioning
• Genetics

and should never be guaranteed.

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🐣 Hatching

At warm temperatures, eggs generally hatch after approximately:

ONE WEEK

The exact development time varies with:

• Temperature
• Oxygenation
• Water chemistry

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👶 Fry

After hatching, young fish continue absorbing their:

YOLK SACS

before beginning active feeding.

Suitable first foods include:

• Baby brine shrimp
• Microworms
• Fine sinking carnivore foods
• Crushed omnivore tablets
• Fine insect foods

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⚠️ Fry Can Starve Quickly

L201 fry require:

FREQUENT FEEDING

Once the yolk is absorbed, food should be available regularly.

At the same time:

WATER QUALITY MUST REMAIN EXCELLENT

because frequent protein feeding can rapidly increase organic waste.

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💧 Breeding Conditions

Successful breeding is associated with:

• Warm water around 82–86°F
• High oxygenation
• Clean water
• Good circulation
• Soft water
• Slightly acidic to neutral pH
• Multiple caves
• Well-conditioned adults

A modest reduction in:

• Conductivity
• pH

combined with water changes may sometimes stimulate spawning.

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🧬 Hybridization Risk

Different Hypancistrus species can potentially hybridize in captivity.

Do not mix breeding colonies of:

• L201
• Hypancistrus contradens
• L102 H. inspector
• L471
• L199
• Other unidentified Hypancistrus

if maintaining pure breeding lines.

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⚠️ “Big Spot L201” Identification

Large-spotted fish sold as:

BIG SPOT L201

deserve particularly careful identification.

Some are genuine variable L201.

Others may actually be:

Hypancistrus contradens

If establishing a breeding group:

KEEP FISH OF THE SAME VERIFIED LINE TOGETHER

rather than mixing every spotted Orinoco Hypancistrus sold under the L201 name.

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🌎 Conservation Status

Because the aquarium L201 remains:

SCIENTIFICALLY UNDESCRIBED

it does not have its own formal species-level IUCN assessment.

Therefore:

IUCN STATUS: NOT EVALUATED

is the safest wording.

Do not borrow the:

NEAR THREATENED

status of Hypancistrus contradens unless the fish has actually been identified as that species.

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⭐ Why Keep an L201 Orinoco Angel Pleco?

The L201 combines:

• ⚫ Deep dark body coloration
• ⚪ White, cream, or yellow spotting
• 🌊 Upper Orinoco origin
• 📏 Manageable approximately 4–5 inch adult size
• 🦐 Protein-oriented feeding
• 😌 Generally peaceful personality
• 🌙 Nocturnal behavior
• 🪨 Cave-dwelling lifestyle
• 🥚 Confirmed captive breeding
• 👨‍👧 Male parental care
• 🧬 Fascinating unresolved taxonomy

into an excellent small-to-medium Hypancistrus for properly maintained warm-water aquariums.

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⚠️ Important Considerations

Before purchasing an L201 Orinoco Angel Pleco:

• Keep the scientific identification as Hypancistrus sp. L201.
• L201 remains scientifically unresolved.
• Do not automatically rename L201 Hypancistrus contradens.
• H. contradens is a valid but different spotted Orinoco Hypancistrus in specialist aquarium references.
• Large-spotted H. contradens are sometimes mislabeled L201 Big Spot or L201A.
• L201 can also be confused with L102 Hypancistrus inspector.
• L201 can also be confused with the smaller L471.
• Preserve L-number and collection information.
• This listing is for wild-caught fish.
• Adult L201 generally reach approximately 4–5 inches.
• Provide approximately 30 gallons or larger.
• Use 40–55+ gallons for groups.
• Provide more caves than plecos.
• Maintain approximately 79–86°F.
• Maintain high dissolved oxygen.
• Provide moderate to strong water movement.
• Maintain ammonia and nitrite at zero.
• Keep nitrate low.
• Feed a protein-leaning omnivorous diet.
• Provide substantial animal and insect foods.
• Plant foods are supplemental.
• Do not purchase L201 as an algae cleaner.
• Avoid extremely aggressive feeding competition.
• Expect territorial behavior around caves.
• Captive breeding is well documented.
• Males guard the eggs and developing fry.
• Keep breeding lines separate from other Hypancistrus.
• Do not assign the conservation status of H. contradens to unresolved L201.
• Never release aquarium fish into natural waterways.

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🧬 Taxonomy

The safest current identification is:

Hypancistrus sp. L201

Classification:

• Order: Siluriformes
• Family: Loricariidae
• Subfamily: Hypostominae
• Genus: Hypancistrus
• Species: Undescribed / unresolved
• L-Number: L201

For this product, use:

L201 Orinoco Angel Pleco – (Hypancistrus sp. L201)

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🔢 L201 Identification Disclaimer

Several spotted Hypancistrus from the Orinoco Basin are frequently confused in the aquarium trade.

These include:

• L201 – Hypancistrus sp.
• Hypancistrus contradens
• L102 – Hypancistrus inspector
• L471 – Hypancistrus sp.

For accurate identification and responsible breeding:

• Preserve the L-number
• Preserve collection locality when available
• Keep similar breeding lines separate
• Do not assume every large-spotted L201 is H. contradens
• Do not assume every L201 is H. contradens

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🚚 Live Fish Shipping

Live fish are professionally packed for safe transport.

Shipping availability depends on:

• Fish size
• Destination
• Weather conditions
• Carrier availability
• Applicable state and local regulations

Please review our Shipping & Payment Information and Live Arrival Guarantee / DOA Policy before ordering.

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⚠️ Buyer Responsibility

Customers are responsible for confirming that Hypancistrus sp. L201 may legally be purchased, possessed, transported, and received in their state or local jurisdiction before ordering.

Never release aquarium fish into natural waterways.