White Eye Moray Eel (Gymnothorax thyrsoideus)
Reef Compatible – With Caution
Care Level – Intermediate
Disposition – Semi-aggressive
Min. Tank Size – 75 gallons
Mature Size – 27 inches
Specifications
| Feature | Detail |
|---|---|
| Species | Gymnothorax thyrsoideus |
| Size (Adult) | 12″ to 16″ (L) |
| Compatibility | Reef compatible with caution |
| Aggression Level | Semi-aggressive |
| Minimum Tank Size | 75 gallons |
| Mature Size | 27 inches |
FAQ
Is this moray eel safe to keep with corals?
This eel is reef compatible with caution. It may interact with certain corals or invertebrates, especially those that are small or slow-moving. Monitor closely and avoid housing with delicate or sessile species.
What is the expected growth rate of this eel?
The eel grows from 12″ to 16″ in length, reaching a mature size of 27 inches over time. Growth rate depends on tank conditions, diet, and water parameters.
Is this eel suitable for beginners?
No, this eel requires intermediate care and a large tank. It is not recommended for novice aquarists due to its semi-aggressive nature and specific environmental needs.

Oliver Ferguson –
The eel arrived healthy and active. I’ve kept it in a 75-gallon tank with live rock and a few corals. It’s not aggressive but does show interest in hiding spots. I monitor it closely, especially during feeding times. It’s a unique addition to the tank.
Luke Hardacre –
It’s a striking eel with a calm demeanor. I noticed it avoids direct contact with corals, which is good. The tank needs to be large and well-maintained. Feeding is straightforward with frozen fish meals.
Donna Sanderson –
I’m not sure how it interacts with other fish. I’ve kept it with a few peaceful species, and so far no issues. Still, I’d recommend caution and regular observation.