Congo Tetra tank mates
Phenacogrammus interruptus
5 rated pairings from the Congo Tetra care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Congo Tetra needs at least 30 gallons on its own; every companion adds to that.
Excellent matches
3 · Same water, complementary zones, no conflict.
Rummy Nose Tetra
Hemigrammus rhodostomus
15 gal min · 2" adult · Peaceful
Similar size, peaceful temperament, and identical water parameter requirements make them ideal schooling companions
Cardinal Tetra
Paracheirodon axelrodi
15 gal min · 2" adult · Peaceful
Comparable size and peaceful nature; both thrive in soft, slightly acidic water in planted tanks
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Small, peaceful algae-eaters that occupy bottom zones and pose no threat to tetras
Good matches
1 · Compatible with normal care — watch space and numbers.Use caution
1 · Works in the right setup; read the note before combining.
Also recommended alongside Congo Tetra
Species whose own guides list Congo Tetra as a tank mate.
Angelicus Synodontis
Synodontis angelicus
55 gal min · 10" adult · Semi-aggressive
Bucktooth Tetra
Exodon paradoxus
40 gal min · 2.4" adult · Aggressive
Dwarf Marbled Catfish
Microglanis poecilus
20 gal min · 2.8" adult · Semi-aggressive
Harlequin Shark
Labeo cyclorhynchus
55 gal min · 6" adult · Semi-aggressive
Hoplo Catfish
Megalechis thoracata
75 gal min · 8" adult · Semi-aggressive
Rope Fish
Erpetoichthys calabaricus
55 gal min · 15" adult · Peaceful
Striped Headstander
Anostomus anostomus
55 gal min · 7" adult · Semi-aggressive
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.