Sphaeramia nematoptera: Aquarist Experience Level: Beginner Average Mature Size: 3.5 inches Minimum Tank Size: 20 gallons Temperament: Peaceful Reef Compatibility: Yes Aquarium Hardiness: High Temperature: 74–80°F Description: The Pajama Cardinalfish displays a vibrant mix of colors, featuring a greenish-yellow face, vivid orange eyes, and a silver body accented by a striking black scalar margin and orange spots near the tail. Despite its vivid appearance, Sphaeramia nematoptera is peaceful and integrates well into community saltwater tanks. Optimal care involves keeping them in small groups within aquariums of at least 30 gallons. Their slow, deliberate swimming style means they thrive best with calm tankmates and abundant hiding spots among rocks or plants. They often seek shelter in seagrass or blend in with long-spined sea urchins. Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary.