| Care Level | Moderate |
|---|---|
| Temperament | Semi-Aggressive |
| Reef Safe | With Caution |
| Functional Benefit | Ornamental Only |
| Diet Type | Carnivore |
| Mininum Tank Size | 30 gallons |
| Max Size | 3 inches |
| Temperature | 72–78°F |
| pH Range | 8.1–8.4 |
| Specific Gravity | 1.022–1.025 |
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Full guarantee terms →Ships Monday – Thursday for next-day arrival at your nearest FedEx Hold location — typically ready by 9 AM. We monitor every delivery.
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Healthy, stable animals from vetted suppliers — inspected before packing, shipped overnight. Decades of experience built this model so we can deliver premium livestock at 30%+ less than you'd pay elsewhere.
The Twin Spot Basslet (Serranus flaviventris) is a compact Western Atlantic basslet known for staying close to rockwork and ledges, where its spot pattern and warm yellow tones read clearly under reef lighting. It’s a great choice when you want a smaller “cave fish” that still comes out to hunt at feeding time.
What You’ll Observe:
- Hovering under overhangs and holding a favorite cave while keeping an eye on the open water
- Quick, controlled dashes to grab meaty foods as they drift past
- Short patrol loops around the same section of rockwork throughout the day
- More consistent daytime activity once it has a regular feeding routine
To help it settle in, provide a 30-gallon (or larger) aquarium with plenty of live rock caves and crevices and stable, well-oxygenated water. Offer small meaty frozen foods and quality pellets in modest portions so it can feed confidently around tankmates. With a consistent layout and routine, it becomes a steady, recognizable presence in its chosen territory.
Will this fish spend most of its time out in the open, or under the rockwork?
Most individuals pick a “home” ledge or cave and work outward from there, showing themselves more often once they associate your approach with feeding.
Is it normal if it disappears for stretches during the day?
Yes—many basslets rotate between a few preferred hideouts, especially when the tank is busy, and then reappear when things calm down.
Can I keep more than one Twin Spot Basslet in the same tank?
In larger systems it’s usually easiest when they’re introduced at the same time and given multiple separate caves, so each fish can claim its own space.
Do these basslets jump?
They can make quick upward dashes when startled, so a snug lid or screen top helps keep their behavior predictable in an active room.
How do I transition it onto pellets if it prefers frozen at first?
Start with small frozen items at the same spot each feeding, then mix in tiny pellets so it learns to take both in the same routine.
Our selection process means you get robust, well-adjusted specimens that settle in quickly.
