Skip to content
underwatergreen
Menu

Species profile

Peppermint Plecostomus L031/L176

Parancistrus nudiventris

Common names: Peppermint Plecostomus L031/L176, L031, L176

Recognized speciesPlecostomus
Send Us A photo, be a contributor :)

Adult size

Up to 20 cm

Typical adult length 15–20 cm.

Up to 20 cm

Countries of origin

  • See all stock from Brazil

Good fit for your tank?

Good fit for

  • An experienced keeper with a spacious high-flow aquarium
  • A species-focused setup with large secure caves
  • An aquarist prepared for a robust territorial adult

Think carefully if

  • The aquarium has limited floor space
  • Several large plecos must share one cave area
  • You want a simple beginner breeding project

Peppermint Plecostomus L031/L176 is a South American loricariid represented by L031, L176. It requires stable oxygen-rich water, suitable caves, and deliberate species-appropriate feeding.

Appearance and Identification

A broad, heavy peppermint pleco with a dark body covered in numerous small pale spots. The unplated lower abdomen and large mouth distinguish it from many similar spotted loricariids.

Use the L-number identification L031, L176 together with the current assignment Parancistrus nudiventris. Do not merge it with visually similar forms without matching collection locality and diagnostic features.

Mature males may develop a broader shoulder region and stronger odontodes, while females become more rounded through the abdomen. Venting is more reliable than colour or pattern.

Tank Requirements

Suggested filter
About 800–1,000 litres an hour
Suggested heater
About 200–300 W for this tank
Minimum tank volume
200 litres
Minimum tank length
100 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, powerful filtration, broad rock surfaces and large caves. Leave enough floor space for a strong adult to turn and feed without crowding.

Behaviour and Tankmates

Usually quiet toward midwater fish but territorial with similar plecos around caves and food. Adults can become forceful when floor space is restricted.

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 robust peaceful companions and avoid crowded groups of large loricariids. Every bottom fish needs a separate shelter and feeding area.

Check tankmates for this species

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 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 a predominantly vegetable and algae-rich diet with biofilm and measured animal protein. Heavy feeding must be balanced with strict maintenance.

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, 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.

Captive cave spawning has been documented. The male guards the clutch, but breeding requires a mature compatible pair, large secure caves and excellent oxygenation.

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
Recognized species
Genus
Parancistrus
Family
Loricariidae
Species group
Fish, Plecostomus
Previous scientific names
Parancistrus sp. (L031), Historic L-number designation retained for identification., Parancistrus sp. (L176), Historic L-number designation retained for identification.

Have you kept this species?

You can write a note about what worked for you, or send a photograph. We check everything before it appears here.

Share a note or photo

JPG, PNG, or WebP, up to 5 MB.

Raoni Plecostomus L082

Scobinancistrus raonii

Care level
Advanced
Adult size
18.8–25 cm
Minimum tank
250 litres
Temperature
25–30 °C

Red Fin Cactus Plecostomus L024

Pseudacanthicus pitanga

Care level
Specialist
Adult size
26.2–35 cm
Minimum tank
500 litres
Temperature
25–30 °C

Plan it with our tools