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Species profile

L129 Hypancistrus

Hypancistrus debilittera

Common names: L129 Hypancistrus, L129, Hypancistrus Plecostomus

Recognized speciesPlecostomus
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Adult size

Up to 10 cm

Typical adult length 8–10 cm.

Up to 10 cm

Countries of origin

  • See all stock from Venezuela

Good fit for your tank?

Good fit for

  • A keeper wanting a smaller cave-spawning Hypancistrus
  • A warm aquarium with numerous tight shelters
  • A breeder able to maintain accurate species records

Think carefully if

  • You need an algae-control fish
  • Faster bottom dwellers will take every meal
  • Similar striped Hypancistrus will be mixed casually

L129 Hypancistrus is a South American loricariid currently filed as Hypancistrus debilittera. Adults reach approximately 10.0 cm. It requires stable, oxygen-rich water, suitable caves, and deliberate feeding.

Appearance and Identification

The Colombian Zebra Pleco has a dark brown base crossed by narrow yellow-cream bands that may weaken, break apart or vary greatly between individuals. It has relatively large eyes and is easily confused with other small Orinoco Hypancistrus.

This profile is identified by L129 and the current assignment Hypancistrus debilittera. Do not merge it with a visually similar L-number without matching collection locality and diagnostic features.

Mature males develop broader heads and stronger odontodes on the cheeks, first pectoral rays and body. Females become fuller through the abdomen, while young fish are difficult to sex.

Tank Requirements

Suggested filter
About 360–450 litres an hour
Suggested heater
About 100–125 W for this tank
Minimum tank volume
90 litres
Minimum tank length
75 cm
Minimum group size
1
Recommended group size
3
Activity level
Moderate
Flow preference
High
Planting preference
Lightly planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Low

Provide warm, clean and highly oxygenated water with strong filtration, subdued shelter and several close-fitting caves. Ensure shy fish can feed without leaving secure cover for long.

Behaviour and Tankmates

A small but territorial pleco, particularly between adult males competing for caves. It is usually peaceful toward fish using the middle and upper water layers.

Can be kept singly or in a managed breeding group if each adult has an appropriate cave and unobstructed feeding access.

Mature males defend caves and may trap or injure rivals when shelter is limited.

It suits calm communities with small peaceful fish, provided bottom territories and food are protected. Avoid mixing it with similar Hypancistrus forms where identification or hybridisation would be a concern.

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Water Parameters

Temperature
26–31 °C
pH
5.5–7.5
GH
1–12
KH
0–6
TDS
30–220
Stability importance
Critical

Maintain stable, clean, oxygen-rich freshwater. Strong filtration and gas exchange are essential because warm water, protein-rich feeding, and loricariid waste can reduce oxygen and impair water quality.

Parameter caveat
Acclimate slowly to changes in temperature and conductivity. Keep ammonia and nitrite at zero, control nitrate, and never allow caves or rockwork to create stagnant waste pockets.

Feeding

Diet types
Carnivore, Insectivore, Omnivore
Feeding frequency
Daily
Preferred foods
  • High-quality carnivore sinking tabletUse a small protein-rich food delivered near each cave after lights dim.
  • Frozen brine shrimp, mysis, or insect larvaeOffer varied small animal foods several times each week.
  • Soft omnivore waferProvides fibre and plant matter alongside the protein-rich staple.
  • Natural biofilmMature hardscape supports supplementary grazing but does not replace deliberate feeding.

Feed a protein-oriented omnivorous diet with small crustacean and insect foods, quality sinking pellets and some vegetable matter. It is not an algae-cleaning species.

Feed after lights dim and place food near every occupied cave. Confirm that subordinate fish eat, and remove rich leftovers before they affect water quality.

Breeding

Breeding type
Cave Spawner, Egg Layer
Breeding difficulty
Difficult
Breeding temperature
29 °C
Breeding pH
6.5
Brood or egg count
Usually about 20 to 80 adhesive eggs, depending on the form and female size.
Incubation
7 days
Parental care
Paternal care
Baby foods
  • Mature biofilmContinuous grazing supports fry between targeted feeds.
  • Finely powdered sinking foodFeed tiny portions close to the breeding cave several times daily.
  • Newly hatched brine shrimpUseful supplementary protein once fry leave the cave and can take moving prey.

Captive cave breeding is well documented. The male guards a modest clutch inside a close-fitting cave, and fry are generally manageable when kept clean, well oxygenated and adequately fed.

Habitat and Origin

Geographic origin
Amazon Basin, South America, Venezuela
Natural habitat
Fast-Flowing Stream, Freshwater River, Rocky Shoreline
Aquarium contexts
Breeding Tank, Freshwater Aquarium, High-Flow Aquarium, Species-Only Aquarium
Audience level
Advanced

Classification

Profile type
Recognized species
Genus
Hypancistrus
Family
Loricariidae
Species group
Fish, Plecostomus
Previous scientific names
Hypancistrus sp. (L129), Historic L-number designation retained as a common identifier.

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L136C Hypancistrus

Hypancistrus sp. (L136C)

Care level
Advanced
Minimum tank
90 litres
Temperature
26–31 °C

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