Pajama Cardinalfish tank mates
Sphaeramia nematoptera
6 rated pairings from the Pajama Cardinalfish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Pajama Cardinalfish needs at least 30 gallons on its own; every companion adds to that.
Excellent matches
3 · Same water, complementary zones, no conflict.Ocellaris Clownfish
Amphiprion ocellaris
20 gal min · 3.5" adult · Semi-aggressive
Similar peaceful temperament and reef-safe behavior; compatible water parameters
Pistol Shrimp
Alpheus randalli
20 gal min · 2" adult · Semi-aggressive
Peaceful invertebrate that occupies different ecological niche; reef-safe
Neon Goby
Elacatinus oceanops
20 gal min · 2" adult · Peaceful
Small, peaceful fish with compatible nocturnal/crepuscular activity patterns
Good matches
2 · Compatible with normal care — watch space and numbers.Use caution
1 · Works in the right setup; read the note before combining.Also recommended alongside Pajama Cardinalfish
Species whose own guides list Pajama Cardinalfish as a tank mate.
Coral Beauty Angelfish
Centropyge bispinosa
70 gal min · 4" adult · Semi-aggressive
Bartlett's Anthias
Pseudanthias bartlettorum
75 gal min · 3.5" adult · Peaceful
Blastomussa
Blastomussa wellsi
30 gal min · 2" adult · Peaceful
Blue Assessor
Assessor macneilli
20 gal min · 2.5" adult · Peaceful
Canary Blenny
Meiacanthus oualanensis
30 gal min · 4.5" adult · Peaceful
Carpenter's Fairy Wrasse
Paracheilinus carpenteri
55 gal min · 4" adult · Peaceful
Duncan Coral
Duncanopsammia axifuga
30 gal min · 2" adult · Peaceful
Emperor Angelfish
Pomacanthus imperator
150 gal min · 15" adult · Semi-aggressive
French Angelfish
Pomacanthus paru
180 gal min · 15" adult · Semi-aggressive
Koran Angelfish
Pomacanthus semicirculatus
180 gal min · 15" adult · Semi-aggressive
Lyretail Anthias
Pseudanthias squamipinnis
75 gal min · 5" adult · Peaceful
Midas Blenny
Ecsenius midas
30 gal min · 5" adult · Semi-aggressive
Purple Firefish
Nemateleotris decora
20 gal min · 3.5" adult · Peaceful
Ricordea Yuma
Ricordea yuma
30 gal min · 2" adult · Peaceful
Saddleback Clownfish
Amphiprion polymnus
30 gal min · 4.5" adult · Semi-aggressive
Scopas Tang
Zebrasoma scopas
75 gal min · 8" adult · Semi-aggressive
Sun Coral
Tubastrea aurea
30 gal min · 2" adult · Peaceful
Tailspot Blenny
Ecsenius stigmatura
20 gal min · 2.5" adult · Peaceful
Valentini Puffer
Canthigaster valentini
40 gal min · 4" adult · Semi-aggressive
Volitans Lionfish
Pterois volitans
120 gal min · 15" adult · Semi-aggressive
Yellow Tang
Zebrasoma flavescens
75 gal min · 8" adult · Semi-aggressive
Yellowhead Jawfish
Opistognathus aurifrons
30 gal min · 4" adult · Peaceful
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.