Flounder (Bothus sp)
Reef Compatible – With Caution
Care Level – Beginner
Disposition – Semi-aggressive
Min. Tank Size – 150 gallons
Mature Size – 18 inches
Specifications
| Feature | Size: Tiny (2″ and below) |
|---|---|
| Species | Bothus sp |
| Compatibility | Reef compatible with caution |
| Difficulty Level | Beginner |
| Behavior | Semi-aggressive |
FAQ
Is this flounder suitable for a reef tank?
Yes, but with caution. It can be compatible with reef environments, though it may pose a threat to smaller invertebrates. Monitor closely for any signs of aggression or predation.
What is the expected growth size of this flounder?
This flounder starts at a tiny size (2″ and below) and can grow up to 18 inches when mature.
What tank size is required for this species?
A minimum tank size of 150 gallons is recommended to ensure proper space and stability.

Joe North –
I bought this flounder for my 150-gallon tank and it has been thriving. It’s active but not overly aggressive. I keep an eye on it around corals, and so far no issues. Great for beginners looking for a low-maintenance, semi-aggressive fish.
Thomas Underwood –
The flounder arrived healthy and stayed calm in my tank. I noticed it doesn’t eat much, but it’s not a problem. I’m happy with the size and behavior. Just make sure to monitor it near smaller invertebrates.
Lucas Arnold –
Easy to care for and fits well in my reef setup. It’s not a dominant fish, so it doesn’t stress the tank. I appreciate the beginner-friendly nature and the fact that it grows to a manageable size.