Tire Track Eel
Mastacembelus armatus
- Least concern
- Card rarity: Common
- Fish

The zig-zag eel, also known as the Baim, tire-track, tire-track spiny-eel, freshwater spiny eel, or marbled spiny eel, is a species of freshwater ray-finned fish in the family Mastacembelidae. It is native to the riverine systems of the Indian Subcontinent, Sri Lanka, South China, Malaysia, Thailand, Vietnam, Cambodia, Indonesia, and other parts of South and Southeast Asia. The species was initially described as Macrognathus armature. Other common names for this popular captive species include the leopard spiny eel and white-spotted spiny eel.
Classification
- Class
- Actinopterygii
- Order
- Synbranchiformes
- Family
- Mastacembelidae
- Genus
- Mastacembelus