Sargassum Angler (Histiros histrio)
The Sargassum Angler is a reef-compatible species suitable for intermediate aquarium keepers. This aggressive fish requires a minimum tank size of 50 gallons and can grow up to 15 inches in mature size.
Key Features
- Reef Compatible: Yes
- Care Level: Intermediate
- Disposition: Aggressive
- Minimum Tank Size: 50 gallons
- Mature Size: 15 inches
| Feature | Detail |
|---|---|
| Species | Histrio histrio |
| Size Range | 2″ to 3″ (initial), up to 15″ mature |
| Tank Requirement | Minimum 50 gallons |
| Compatibility | Reef compatible |
FAQ
Is the Sargassum Angler safe to keep with other fish?
Due to its aggressive disposition, the Sargassum Angler should not be kept with small or peaceful fish. It may prey on smaller tank mates. Ensure a tank with larger, robust fish or those of similar size and temperament.
What is the expected growth rate of this fish?
The Sargassum Angler grows slowly in early life, reaching 2″ to 3″ in size initially. It can mature to 15 inches over several years with proper care and space.
Can this fish survive in a community tank?
Please contact customer service


Richard Newman –
I’ve kept the Sargassum Angler for over a year in a 55-gallon tank. It’s active and interesting to watch, though it does chase smaller fish. I’ve removed a few small shrimp and snails to avoid conflict. It’s not for beginners, but it adds drama to the tank.
Wanda Vance –
This fish is a striking addition to my reef setup. It’s aggressive but not destructive. I’ve maintained a large tank with plenty of hiding spots. It’s active and helps keep the tank lively.
Joshua Nolan –
The fish is aggressive and I had to remove a few small fish after a few weeks. I’m not sure if it’s suitable for a mixed community. I’d recommend a larger tank with only larger fish.