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Species profile

L033 Lasiancistrus Plecostomus

Lasiancistrus sp. (L033)

Common names: L033 Lasiancistrus Plecostomus, L033

Undescribed speciesPlecostomus
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Countries of origin

  • See all stock from Brazil

Good fit for your tank?

Good fit for

  • A mature river-style community with wood and rock
  • A keeper comfortable with uncommon Lasiancistrus forms
  • An aquarist able to maintain accurate collection records

Think carefully if

  • The L033 identity is uncertain
  • Bottom territories are already occupied
  • You expect a well-documented beginner breeding project

L033 Lasiancistrus Plecostomus is a South American loricariid represented by L033. It requires stable oxygen-rich water, suitable caves, and deliberate species-appropriate feeding.

Appearance and Identification

A compact unnamed Lasiancistrus with a dark body marked by pale spotting or mottling and a bristled cheek region in mature fish. Appearance can vary between collection localities.

Use the L-number identification L033 together with the current assignment Lasiancistrus sp. (L033). Do not merge it with visually similar forms without matching collection locality and diagnostic features. The L-number remains the principal stable identifier because the form is undescribed or not conclusively assigned.

Mature males usually develop stronger cheek and snout odontodes and a broader head. Females are smoother and fuller through the abdomen, while juveniles are difficult to sex.

Tank Requirements

Suggested filter
About 400–500 litres an hour
Suggested heater
About 100–150 W for this tank
Minimum tank volume
100 litres
Minimum tank length
80 cm
Minimum group size
1
Recommended group size
3
Activity level
Moderate
Flow preference
High
Planting preference
Moderately planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Low

Provide clean oxygenated water, wood, rock grazing surfaces and several tight shelters. Moderate to strong current and stable filtration support normal aufwuchs feeding.

Behaviour and Tankmates

Generally peaceful toward midwater fish but territorial around shelter and grazing surfaces. Males may become more defensive in breeding condition.

Can be kept singly. A pair or group requires several appropriately sized caves and enough floor area for every adult to feed without being trapped.

Mature males commonly defend caves and favoured feeding areas from similarly shaped loricariids.

Suitable for calm river communities if each bottom fish has its own retreat. Avoid crowded pleco collections and preserve L033 identity if similar fish are present.

Check tankmates for this species

Water Parameters

Temperature
23–28 °C
pH
5.5–7.5
GH
1–15
KH
0–7
TDS
30–250
Stability importance
Important

Maintain stable clean water with strong oxygenation. Warm water, protein-rich food, wood waste, and crowded hardscape can rapidly reduce oxygen and degrade water quality.

Parameter caveat
Acclimate slowly to temperature and conductivity changes. Keep ammonia and nitrite at zero, control nitrate, and inspect caves and rockwork for trapped waste.

Feeding

Diet types
Aufwuchs Grazer, Insectivore, Omnivore
Feeding frequency
Daily
Preferred foods
  • Quality omnivore sinking waferUse a complete sinking food as the staple.
  • Frozen brine shrimp or insect larvaeOffer small portions for protein variety.
  • Natural biofilm and aufwuchsMaintain mature hardscape as supplementary grazing.
  • Vegetable-based waferProvides fibre and plant matter.

Offer algae and vegetable-rich sinking foods, biofilm and regular small invertebrate foods. It is an adaptable aufwuchs omnivore rather than a waste cleaner.

Feed after lights dim and distribute food near every occupied shelter. 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
25.5 °C
Breeding pH
6.5
Brood or egg count
Usually several dozen adhesive eggs; dependable species-specific fecundity data are unavailable.
Incubation
7 days
Parental care
Paternal care
Baby foods
  • Mature biofilmProvides continuous grazing after fry leave the cave.
  • Fine powdered sinking foodFeed tiny portions close to shelter several times daily.
  • Newly hatched brine shrimpUse as supplementary protein once fry can take moving prey.

A male-guarded cave or crevice spawning pattern is expected for the genus, but detailed reliable breeding information for L033 is limited.

Habitat and Origin

Geographic origin
Amazon Basin, Brazil, South America
Natural habitat
Fast-Flowing Stream, Freshwater River, Rocky Shoreline
Aquarium contexts
Freshwater Aquarium, Freshwater Community, High-Flow Aquarium
Audience level
Intermediate

Classification

Profile type
Undescribed species
Genus
Lasiancistrus
Family
Loricariidae
Species group
Fish, Plecostomus

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L040 Harttia Plecostomus

Harttia sp. (L040)

Care level
Advanced
Minimum tank
120 litres
Temperature
20–27 °C

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