Species Profile
Pajama Cardinalfish
Sphaeramia nematoptera
Cardinalfishpeaceful
Adult size
3.5″
Minimum tank
30 gal
Temperature
73–82°F
pH
8.1–8.4
Schooling
Group of 3+
Water level
mid
Diet
Frozen mysis, brine shrimp, marine pellets
Notes
Three-zone coloring: yellow face, black saddle, polka-dotted back end — looks like striped pyjamas. Loose schooler; happiest in groups of 3+. Nocturnal hunter; feed at dusk.
Photo: Rickard Zerpe / Wikimedia Commons · Source · CC-BY-2.0