Threadfin Snapper (Symphorichthys spilurus)
Reef compatible with no known predatory behavior toward corals or invertebrates.
Care level: Expert-only. Disposition: Peaceful. Minimum tank size: 150 gallons. Mature size: 23 inches.
| Size | L (4″ to 5″) |
|---|---|
| Species | Symphorichthys spilurus |
| Compatibility | Reef safe |
| Experience Level | Expert only |
| Adult Size | 23 inches |
FAQ
Is the Threadfin Snapper suitable for a reef tank?
Yes, the Threadfin Snapper is reef compatible and does not pose a threat to corals or invertebrates.
What is the minimum tank size required for this fish?
A minimum tank size of 150 gallons is required for proper growth and stability.
Is this fish aggressive or peaceful?
The Threadfin Snapper is peaceful and generally does not display aggressive behavior.

Dylan Martin –
Bought this for my 180-gallon reef tank. It’s been two months and it’s active but not causing any issues. The fish seems to adapt well to the environment and doesn’t disturb the corals. Only thing is it needs a large tank and careful monitoring of water parameters.
Jake Short –
Great addition to a mature reef setup. It’s calm and doesn’t chase other fish. I had to ensure the tank was at least 150 gallons, which I did. It’s a bit shy at first but becomes more confident over time.
Claire Rampling –
After installing this snapper, the tank feels more balanced. It’s peaceful and doesn’t eat any of the polyps. I’m happy with the choice, especially since it’s reef-safe and fits well in my expert-level setup.