Tire Track Eel

The Tire Track Eel is a freshwater spiny eel named for its network of dark markings. It often rests with part of its body concealed, then becomes more visible during feeding or under subdued lighting. Its small purchase size should be viewed as the beginning of a much larger fish.

Fish details

• Scientific name: Mastacembelus armatus/favus group; both names occur under this trade label
• Size offered: 10 cm or 15–20 cm
• Adult size: Depending on identification, approximately 70–90 cm is possible
• Origin: South and Southeast Asia
• Water type: Freshwater
• Temperament: Predatory toward small fish; may be territorial with other spiny eels

Recommended aquarium conditions

• Aquarium: Large adult aquarium with generous floor space; plan around 180 US gallons or larger for a full-grown specimen
• Temperature: 24–28°C (75–82°F)
• pH: 6.5–7.5 as a practical target

Use a soft sand substrate for burrowing and provide smooth caves or pipes. Keep heavy decorations stable so digging cannot undermine them. Combine good filtration and aeration with sheltered areas, and keep the aquarium completely covered with gaps around equipment secured.

Diet and feeding

Feed suitable live or thawed invertebrate foods such as earthworms, bloodworms for smaller individuals, and appropriately sized shrimp as it grows. Offer variety and confirm that food reaches the eel rather than being taken by faster fish. Some individuals need time to accept prepared diets.

Compatibility and care

Avoid tiny fish and shrimp, which can become food, as well as aggressive fish that harass a resting eel. A single specimen is the simplest arrangement; keeping several requires much more space and close observation. The common name covers similar-looking species, so ask us to confirm the current identification when planning adult housing. Maintain clean water and avoid sharp gravel or rough handling that can injure the skin.

Sizes are approximate. Contact Las Vegas Exotic Fish at (702) 685-5100 to confirm availability or discuss your setup.