Blacksaddle Filefish (Paraluteres prionurus)
Reef compatible: No
Care level: Intermediate
Disposition: Semi-aggressive
Minimum tank size: 30 gallons
Mature size: 4.5 inches
Size Information
| Size | Range |
|---|---|
| M | 2″ to 2.5″ |
FAQ
Is this filefish suitable for a reef tank?
No, this species is not reef compatible and may prey on corals or invertebrates.
What is the recommended tank size for keeping this fish?
A minimum tank size of 30 gallons is required.
How aggressive is this fish?
The Blacksaddle Filefish is semi-aggressive and may display territorial behavior, especially in smaller tanks.

Carolyn Harris –
Got this filefish for my 30-gallon tank. It’s active and curious, but I had to keep it away from other fish to avoid conflicts. It’s not aggressive, just semi-territorial. Feeds well on crustaceans and small invertebrates. Good for intermediate reef setups with proper space.
Claire McLean –
The fish arrived healthy and has been adjusting well. I keep it in a 35-gallon tank with some rock and hiding spots. It doesn’t eat much but stays active. Not ideal for small tanks, but fits well in a mid-sized setup.
Andrea Thomson –
It’s a decent addition to a larger tank. I noticed it occasionally nips at smaller invertebrates, so I’ve removed them from the tank. Needs space and a stable environment to thrive.