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Species profile

L177 Baryancistrus Plecostomus

Baryancistrus sp. (L177)

Common names: L177 Baryancistrus Plecostomus, L177

Undescribed speciesPlecostomus

Countries of origin

  • See all stock from Brazil

Good fit for your tank?

Good fit for

  • An experienced keeper with a mature warm pleco aquarium
  • A setup with strong filtration and separated caves
  • An aquarist able to monitor feeding and body condition

Think carefully if

  • The aquarium is newly established
  • Targeted feeding is not possible
  • Several territorial plecos must share limited cave space

L177 Baryancistrus Plecostomus is a South American loricariid represented by L177. It requires stable oxygen-rich water, suitable caves, and deliberate species-appropriate feeding.

Appearance and Identification

L177 is an unidentified Baryancistrus with a broad mouth, compact armoured body and spotting or mottling that may change with age. Similar coded forms can be difficult to separate without collection records.

Use the L-number identification L177 together with the current assignment Baryancistrus sp. (L177). 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 a broader head and stronger cheek and pectoral odontodes. Females become fuller through the abdomen, but juveniles are not reliably sexed.

Tank Requirements

Suggested filter
About 1,000–1,250 litres an hour
Suggested heater
About 250–375 W for this tank
Minimum tank volume
250 litres
Minimum tank length
120 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, highly oxygenated water, strong filtration, broad rock or wood grazing surfaces and several secure caves. Recently imported fish require close observation because poor feeders can lose condition quickly.

Behaviour and Tankmates

Often shy at first but territorial around caves and preferred feeding surfaces. Adults may become forceful with other plecos when bottom space is limited.

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.

Peaceful midwater fish are usually suitable. Other loricariids require separate shelters, visual barriers and protected feeding areas.

Check tankmates for this species

Water Parameters

Temperature
26–31 °C
pH
5.5–7.5
GH
1–15
KH
0–6
TDS
30–240
Stability importance
Critical

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, Herbivore, Omnivore
Feeding frequency
Daily
Preferred foods
  • Natural aufwuchs and biofilmMaintain mature rocks and wood for continuous supplementary grazing.
  • Complete herbivore or algae waferUse a high-quality sinking staple with fibre.
  • Blanched leafy greens or courgetteOffer occasionally and remove leftovers.
  • Frozen daphnia or insect larvaeUse small portions as supplementary protein.

Offer abundant vegetable and algae-based sinking foods, soft vegetables and biofilm, with modest invertebrate protein. Visible algae is not a complete diet.

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
28.5 °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 spawning method is expected, but dependable breeding guidance for this coded form remains limited. Mature compatibility and excellent oxygenation are essential.

Habitat and Origin

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

Classification

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

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