Species Profile

Tire Track Eel

Mastacembelus armatus

Oddballssemi-aggressive

Adult size

26″

Minimum tank

125 gal

Temperature

75–82°F

6.5–7.5

Schooling

Solitary OK

Water level

bottom

Grows from juvenile

Typically sold at ~5″ and reaches 26″ over ~3 years. Plan tank size for the adult, not the fish at purchase.

Diet

Frozen, live, sinking carnivore pellets

Notes

Spiny eel — grows over two feet. Sand substrate essential (gravel can injure them). Will eat any fish small enough to swallow.

Photo: Adolsomee / Wikimedia Commons · Source · CC-BY-SA-3.0