Mastacembelidaefreshwater fishintermediate

Circumcinct Spiny Eel

Macrognathus circumcinctus

Origin: Thailand, Malaysia, Indonesia

C

Water Parameters

Temperature2328 °C
15 °C35 °C
pH6.57.5
49
GH (Hardness)315 °dGH
0 °dGH30 °dGH
KH (Alkalinity)18 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
20 cm
Min Tank
100 L
Lifespan
5-10
Swimming Level
bottom
Schooling
No
Diet
carnivore
Temperament
Peaceful with fish too large to eat; predatory toward small fish

About

Macrognathus circumcinctus, the Half-Banded Spiny Eel, is a smaller and more manageable spiny eel from Southeast Asia featuring an attractive pattern of dark saddles or half-bands along its body. A nocturnal burrower that hides in sand during the day. Peaceful with fish too large to be eaten, it is a fascinating oddity for community tanks and biotope setups.

Care Guide

Provide a deep, soft sand substrate for burrowing — essential for this species' well-being. Feed live and frozen meaty foods: bloodworms, earthworms, small crustaceans. Provide caves and driftwood for daytime hiding. Secure tank lid — spiny eels are escape artists. Do not mix with very small fish they might eat at night.

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