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Species profile

Werneke’s Peckoltia L243

Peckoltia wernekei

Common names: Werneke's Peckoltia L243, L243

Recognized speciesPlecostomus

Adult size

Up to 12 cm

Typical adult length 9–12 cm.

Up to 12 cm

Countries of origin

  • See all stock from Venezuela

Good fit for your tank?

Good fit for

  • Mature planted aquarium setups
  • Intermediate shrimp keepers

Think carefully if

  • The aquarium contains shrimp-eating fish
  • The tank is newly cycled
  • Water conditions change frequently

Werneke’s Peckoltia L243 is a South American loricariid represented by L243. It requires stable oxygen-rich water, suitable caves, and deliberate species-appropriate feeding.

Appearance and Identification

An armoured South American loricariid currently identified as Peckoltia wernekei. Colour, spot size, bands, fin markings, and body proportions separate similar L-number forms.

Use the L-number identification L243 together with the current assignment Peckoltia wernekei. Do not merge it with visually similar forms without matching collection locality and diagnostic features.

Mature males usually develop a broader head and stronger cheek or pectoral odontodes. Females are generally fuller through the abdomen when carrying eggs.

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
Moderate
Planting preference
Moderately planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Low

Provide at least 90 litres and a tank length of about 75 cm or more. Use strong biological filtration, high gas exchange, stable hardscape, multiple caves, and clear feeding areas. Prevent waste from accumulating beneath wood and rocks.

Behaviour and Tankmates

Primarily nocturnal or crepuscular and closely associated with caves, rock, wood, and the substrate.

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 fish with matching temperature and current needs. Avoid crowding territorial plecos into the same floor area, and do not combine large predatory forms with small or delicate bottom dwellers.

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
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.

An omnivorous hardscape forager requiring a varied sinking diet rather than community leftovers.

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.

A paternal cave spawner. The female deposits adhesive eggs in a tight shelter, after which the male guards and fans the clutch and yolk-sac fry. Successful breeding requires a correctly sized cave, clean oxygen-rich water, and compatible adults.

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, Freshwater Community, Planted Aquarium
Audience level
Intermediate

Classification

Profile type
Recognized species
Genus
Peckoltia
Family
Loricariidae
Species group
Fish, Plecostomus
Previous scientific names
Peckoltia sp. (L243), Historic L-number designation retained for identification.

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