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Species profile

Tiger-striped Plane Plecostomus L257

Pseudolithoxus tigris

Common names: Tiger-striped Plane Plecostomus L257, L257, Plane Plecostomus

Recognized speciesPlecostomus
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Adult size

Up to 9.5 cm

Typical adult length 7.6–9.5 cm.

Up to 9.5 cm

Countries of origin

  • See all stock from Venezuela

Good fit for your tank?

Good fit for

  • An advanced keeper with a mature high-flow aquarium
  • A rock setup with many separated crevices
  • An aquarist able to target-feed nocturnal fish

Think carefully if

  • Flow or oxygenation may be inconsistent
  • The bottom is crowded with territorial plecos
  • You want a proven easy breeding species

Tiger-striped Plane Plecostomus L257 is a South American loricariid currently filed as Pseudolithoxus tigris. Adults reach approximately 9.5 cm. It requires stable, oxygen-rich water, suitable caves, and deliberate feeding.

Appearance and Identification

A highly flattened plane pleco with bold pale and dark tiger-like bands across the body and fins. Broad pectoral fins and a low profile allow it to cling tightly to rock in fast current.

This profile is identified by L257 and the current assignment Pseudolithoxus tigris. Do not merge it with a visually similar L-number without matching collection locality and diagnostic features.

Mature males are expected to develop a broader head and stronger cheek and pectoral odontodes. Females become fuller through the abdomen, but juveniles are difficult to sex.

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
High
Planting preference
Lightly planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Low

Provide intense oxygenation, brisk current, clean rock surfaces and many narrow crevices. Strong filtration and careful removal of trapped organic waste are essential.

Behaviour and Tankmates

Secretive and generally peaceful toward midwater fish, but territorial with similar flattened plecos. It often feeds most confidently after lights dim.

Can be maintained in a small group when every adult has a separate cave and feeding area.

Males defend tight caves but serious conflict is limited when the aquarium provides abundant hardscape.

Use peaceful current-loving companions and avoid bulky or aggressive bottom fish. Every plane pleco requires a separate refuge and feeding area.

Check tankmates for this species

Water Parameters

Temperature
24–29 °C
pH
5.5–7.5
GH
1–12
KH
0–6
TDS
30–220
Stability importance
Critical

Maintain stable, clean, oxygen-rich freshwater. Strong filtration and gas exchange are essential because warm water, protein-rich feeding, and loricariid waste can reduce oxygen and impair water quality.

Parameter caveat
Acclimate slowly to changes in temperature and conductivity. Keep ammonia and nitrite at zero, control nitrate, and never allow caves or rockwork to create stagnant waste pockets.

Feeding

Diet types
Aufwuchs Grazer, Insectivore, Omnivore
Feeding frequency
Daily
Preferred foods
  • Fine carnivore or omnivore waferUse a sinking food that breaks into small particles on rock surfaces.
  • Frozen cyclops, daphnia, or insect larvaeSmall animal foods suit the compact mouth and natural foraging style.
  • Natural aufwuchs and biofilmMaintain mature stones and wood for continuous supplementary grazing.
  • Fine spirulina waferOffer as part of a mixed diet rather than as the sole food.

Feed a mixed aufwuchs diet with quality sinking foods, algae or vegetable matter and small invertebrate foods. Observe shy individuals to confirm they are eating.

Feed after lights dim and place food near every occupied cave. Confirm that subordinate fish eat, and remove rich leftovers before they affect water quality.

Breeding

Breeding type
Cave Spawner, Egg Layer
Breeding difficulty
Specialist
Breeding temperature
27 °C
Breeding pH
6.5
Brood or egg count
Usually several dozen adhesive eggs deposited in a tight cave.
Incubation
7 days
Parental care
Paternal care
Baby foods
  • Mature biofilmContinuous grazing supports fry between targeted feeds.
  • Finely powdered sinking foodFeed tiny portions close to the breeding cave several times daily.
  • Newly hatched brine shrimpUseful supplementary protein once fry leave the cave and can take moving prey.

Reliable captive-breeding information is limited. A male-guarded crevice spawning pattern is likely, but repeatable methods are not firmly established.

Habitat and Origin

Geographic origin
South America, Venezuela
Natural habitat
Fast-Flowing Stream, Freshwater River, Rocky Shoreline
Aquarium contexts
Breeding Tank, Freshwater Aquarium, High-Flow Aquarium, Species-Only Aquarium
Audience level
Advanced

Classification

Profile type
Recognized species
Genus
Pseudolithoxus
Family
Loricariidae
Species group
Fish, Plecostomus
Previous scientific names
Pseudolithoxus sp. (L257), Historic L-number designation retained as a common identifier.

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Tocantins Plecostomus L086

Spectracanthicus tocantinensis

Care level
Advanced
Adult size
9–12 cm
Minimum tank
90 litres
Temperature
25–30 °C

Tricornis Plecostomus L212

Hopliancistrus tricornis

Care level
Advanced
Adult size
11.2–15 cm
Minimum tank
100 litres
Temperature
25–30 °C

Vampire Plecostomus L048

Scobinancistrus cf. pariolispos

Care level
Advanced
Minimum tank
250 litres
Temperature
25–30 °C

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