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Striped Dwarf Earthworm Eel

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Pangio cuneovirgata

Also known as: Kuhli Loach (general term, but often applied to this species), Dwarf Kuhli Loach

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Description

Pangio cuneovirgata is a small, eel-like freshwater fish belonging to the family Cobitidae. It is characterized by its slender, elongated body and distinctive color pattern of dark bands on a lighter background. These fish are benthic, spending most of their time foraging in the substrate. They are known for their shy and reclusive nature, often hiding among plants, roots, or buried in the sand during the day and becoming more active at night.

Physical Characteristics

Body shape
eel-like
Coloration
The body is typically yellowish to reddish-brown, adorned with 10-15 dark, wedge-shaped or irregular vertical bands that extend from the dorsal surface to the ventral side, but often do not meet completely. The spaces between the bands are usually lighter. The head is often darker, and the fins are generally translucent.
Scale type
none
Mouth position
inferior
Distinctive features
Slender, elongated, eel-like body, Small, inferior mouth with three pairs of barbels, Small, almost invisible scales embedded in the skin, Distinctive dark, wedge-shaped vertical bands on a lighter body
Dorsal fin
Small, located far back on the body, typically posterior to the midpoint.
Tail fin
Small, rounded or slightly truncated, often with a dark spot at the base.
Pectoral fin
Small and paddle-like, positioned low on the body.
Distinctive fins
All fins are relatively small and often translucent, blending with the body.

Identification Tips

Body Shape

Look for the characteristic slender, worm-like body, typical of Pangio species.

Coloration and Pattern

Observe the distinct dark, wedge-shaped vertical bands on a lighter, yellowish to reddish-brown background. The number and shape of these bands are key.

Barbels

Note the three pairs of small barbels around the mouth, used for foraging in the substrate.

Fin Placement

The small dorsal fin is located far back on the body, distinguishing it from some other loach species.

Habitat

Water type
freshwater
Depth
Benthic, typically found in shallow areas of streams and rivers.
Environment
Slow-moving to moderately flowing clear water streams, rivers, and sometimes flooded forests. They prefer areas with soft substrates (sand, fine gravel, leaf litter) and abundant submerged vegetation, roots, or driftwood for shelter.
Geographic range
Native to Southeast Asia, specifically known from the Malay Peninsula (Malaysia, Singapore) and parts of Indonesia (Sumatra, Borneo).

Aquarium Information

  • Care level: beginner
  • Temperament: peaceful
  • Diet: omnivore
  • Minimum tank size: 10 gallons (38 liters)
  • Temperature: 24-28 °C (75-82 °F)
  • pH level: 6.0-7.5
  • Hardness: 2-10 dGH
  • Compatibility: Excellent with other peaceful, small to medium-sized community fish. Avoid housing with aggressive or very large fish that might prey on them. Good tankmates include small tetras, rasboras, dwarf cichlids, and other peaceful bottom dwellers.
  • Special requirements: Requires a soft, sandy substrate for burrowing, plenty of hiding places (driftwood, rocks, dense planting), and subdued lighting. They are social fish and should be kept in groups of at least 6-10 individuals to encourage natural behavior and reduce shyness. Good water quality is essential.

Wild Information

  • Conservation status: least concern
  • Seasonality: No specific seasonal behavior patterns are widely documented for this species in the wild, as they are active year-round.
  • Market price: Low to moderate (aquarium trade)
  • Commercial importance: low
  • Taste: Not typically consumed due to small size and bony nature.
  • Texture: Not typically consumed.
  • Nutritional value: Not typically consumed.

Key Facts

Burrowing Behaviorbehavior

Pangio cuneovirgata is an expert burrower, often disappearing into soft substrates for extended periods, especially during the day.

Social Naturebehavior

These loaches are highly social and thrive in groups, exhibiting more natural behaviors and reduced stress when kept with their own kind.

Nocturnal Foragersbehavior

While sometimes seen during the day, they are primarily nocturnal or crepuscular, becoming most active at dusk and dawn to forage for food.

Air Breathingamazing

Like many loaches, Pangio cuneovirgata can gulp atmospheric air and absorb oxygen through its specialized intestinal lining, especially in low-oxygen conditions.

Safety Information

Safe
  • Safety level: safe
  • Venomous: No
  • Edibility: not recommended
  • Handling notes: These fish are harmless. When handling for transfer or examination, use a fine-mesh net to avoid injury to their delicate bodies. They are prone to jumping, so keep them covered.

Similar Species

Kuhli Loach

Pangio kuhlii

Pangio kuhlii typically has broader, more irregular, and often fewer dark bands that are more uniformly distributed along the body, sometimes forming a reticulated pattern. P. cuneovirgata's bands are generally more distinct, wedge-shaped, and numerous.

Black Kuhli Loach

Pangio oblonga

Pangio oblonga is uniformly dark brown to black, lacking the distinct banding pattern seen in P. cuneovirgata.

Half-banded Kuhli Loach

Pangio semicincta

Pangio semicincta has dark bands that typically do not extend completely around the body, often stopping mid-flank, and the bands are usually narrower and more numerous than in P. cuneovirgata.

Scientific Classification

Kingdom
Animalia
Phylum
Chordata
Class
Actinopterygii
Order
Cypriniformes
Family
Cobitidae
Genus
Pangio
Species
Pangio cuneovirgata

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