Pacific Jewel Damselfish
Plectroglyphidodon lacrymatus
Reef Compatible: Yes
Care Level: Beginner
Disposition: Aggressive
Min. Tank Size: 30 gallons
Mature Size: 4 inches
| Feature | Detail |
|---|---|
| Species | Plectroglyphidodon lacrymatus |
| Reef Safety | Compatible |
| Difficulty Level | Beginner |
| Growth Size | Up to 4 inches |
| Minimum Tank Size | 30 gallons |
| Behavior | Aggressive |
FAQ
Is the Pacific Jewel Damselfish safe to keep with other fish in a reef tank?
Yes, it is reef compatible, but due to its aggressive nature, it may pose a threat to smaller or more delicate fish. Careful selection of tank mates is recommended.
What is the recommended minimum tank size for this fish?
A minimum tank size of 30 gallons is required to provide adequate space and stability for the Pacific Jewel Damselfish.
How big does the Pacific Jewel Damselfish grow?
It reaches a mature size of 4 inches.

Anthony Nolan –
I kept this damselfish in a 30-gallon tank with corals and it’s been active and colorful. It’s aggressive toward smaller fish, so I removed a few shy species. Overall, it adds visual interest and is manageable for a beginner with proper setup.
Christian Davidson –
The fish arrived healthy and quickly adapted to the tank. It’s vibrant and stays near the back wall. I’ve noticed it occasionally nips at smaller invertebrates, so I’ve added some larger, sturdy corals to protect them.
Theresa Gill –
It’s aggressive and not suitable for a mixed community. I had to remove a few peaceful fish after a few weeks. Still, it’s a striking addition to the tank if you’re okay with active behavior.