X5 Pajama Cardinal Fish Med Package – Sphaeramia Nematoptera
Approximate size: 1″ – 2″ each. Maximum size reaches 3″.
Minimum tank size: 20 gallons.
Care level: Easy.
Temperament: Semi-aggressive.
Reef compatible: Yes.
Water conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, specific gravity 1.020-1.025.
| Feature | Detail |
|---|---|
| Species | Sphaeramia Nematoptera |
| Package Type | Medium Package |
| Shipping | Free shipping |
FAQ
What is the typical size of these cardinal fish when they are first introduced?
The average size upon arrival is 1″ to 2″.
Can these fish be kept in a reef tank?
Yes, they are reef compatible.
What water parameters do they require?
They require water temperature between 72-78° F, dKH 8-12, pH 8.1-8.4, and specific gravity 1.020-1.025.

Neil Davidson –
Received the fish in good condition. They are active and adapted well to the tank after a week. The water parameters matched the requirements, and they seem healthy. Easy to care for and don’t stress other fish in the tank.
James Clarkson –
The fish arrived quickly and were in good health. They are semi-aggressive but not overly so. I’ve kept them in a 20-gallon tank with corals, and they coexist well. Water conditions were stable after setup.
Michael Gray –
Great addition to my reef setup. The fish are colorful and active. I followed the water parameters exactly and they’ve been thriving. No issues with aggression or compatibility so far.