Zig Zag Eel (Mastacembelus spp.)
The Zig Zag Eel is a spiny eel species named for the dark zigzag or wave-like patterns that run along its back. Often confused with the Tire Track Eel, this species is typically smaller and more manageable in home aquariums. It's a shy, bottom-dwelling predator that appreciates plenty of hiding spots and low lighting.
 
Size: Typically 12–18 inches (30–45 cm) in captivity
Tank Size: Minimum 75 gallons
Care Level: Moderate to Advanced
Diet: Carnivore – frozen bloodworms, earthworms, shrimp, and sinking meaty foods
Temperament: Peaceful to semi-aggressive (may eat very small tankmates)
Compatibility: Best with medium to large, peaceful fish
Notes: Needs a soft sand or fine gravel substrate for burrowing; requires a tightly sealed lid due to escape tendencies; mostly nocturnal and prefers dim environments.