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Species profile

Asurini Plecostomus L067

Pseudancistrus asurini

Common names: Asurini Plecostomus L067, L067

Recognized speciesPlecostomus

Adult size

Up to 18 cm

Typical adult length 13.5–18 cm.

Up to 18 cm

Countries of origin

  • See all stock from Brazil

Good fit for your tank?

Good fit for

  • An experienced keeper with a warm high-flow river aquarium
  • A species setup with broad rock surfaces and secure caves
  • An aquarist prepared to feed a plant-rich aufwuchs diet

Think carefully if

  • The aquarium has weak oxygenation
  • You want an easy cave-breeding pleco
  • Territorial bottom fish already occupy every shelter

Asurini Plecostomus L067 is a South American loricariid represented by L067. It requires stable oxygen-rich water, suitable caves, and deliberate species-appropriate feeding.

Appearance and Identification

A dark, robust pleco patterned with pale to yellow spots and contrasting yellowish seams along the dorsal and caudal fins. Mature fish also develop prominent odontodes around the snout and cheeks.

Use the L-number identification L067 together with the current assignment Pseudancistrus asurini. Do not merge it with visually similar forms without matching collection locality and diagnostic features.

Males develop stronger odontodes around the head, cheeks and pectoral region and may appear more angular. Females tend to be fuller through the abdomen, although young fish are not reliably sexed.

Tank Requirements

Suggested filter
About 600–750 litres an hour
Suggested heater
About 150–225 W for this tank
Minimum tank volume
150 litres
Minimum tank length
90 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

Recreate a warm, highly oxygenated rocky river habitat with strong circulation, broad grazing surfaces and several secure caves. Excellent water quality is essential because this fish is poorly suited to stagnant or dirty conditions.

Behaviour and Tankmates

Usually peaceful toward unrelated midwater fish but territorial around grazing rock and caves. Adult males may challenge other bottom fish that occupy the same niche.

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.

Choose peaceful river fish and avoid aggressive cichlids or large competing plecos. Multiple specimens require clearly separated territories and close observation.

Check tankmates for this species

Water Parameters

Temperature
24–29 °C
pH
5.5–7.5
GH
1–15
KH
0–7
TDS
30–250
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.

Base the diet on algae, biofilm and vegetable-rich sinking foods, with occasional small invertebrate foods. Excessive rich animal protein is inappropriate for its long digestive system.

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
26.5 °C
Breeding pH
6.5
Brood or egg count
Usually several dozen adhesive eggs, with clutch size depending on species and female size.
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.

Dependable home-aquarium breeding has not been established. It is expected to use a guarded cave or crevice, but clutch details and repeatable breeding triggers remain uncertain.

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, Species-Only Aquarium
Audience level
Advanced

Classification

Profile type
Recognized species
Genus
Pseudancistrus
Family
Loricariidae
Species group
Fish, Plecostomus
Previous scientific names
Pseudancistrus sp. (L067), Historic L-number designation retained for identification.

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