Day's Paradise Fish tank mates
Pseudosphromenus dayi
6 rated pairings from the Day's Paradise Fish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Day's Paradise Fish needs at least 10 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.
Sparkling Gourami
Trichopsis pumila
10 gal min · 1.5" adult · Peaceful
Similar size, temperament, and water parameter requirements; both are shy labyrinth fish that coexist peacefully
Chili Rasbora
Boraras brigittae
5 gal min · 0.8" adult · Peaceful
Tiny, peaceful, and shares soft acidic water preferences; will not compete or stress Day's Paradise Fish
Good matches
4 · Compatible with normal care — watch space and numbers.
Kuhli Loach
Pangio kuhlii
20 gal min · 4" adult · Peaceful
Peaceful bottom dweller that occupies a different zone; compatible water parameters and non-threatening behavior

Pygmy Corydoras
Corydoras pygmaeus
10 gal min · 1" adult · Peaceful
Small, peaceful bottom dweller that will not disturb this shy species; compatible soft water conditions

Ember Tetra
Hyphessobrycon amandae
10 gal min · 0.8" adult · Peaceful
Tiny, peaceful schooling fish that prefers soft acidic water; adds activity without stressing the gouramis

Honey Gourami
Trichogaster chuna
10 gal min · 2" adult · Peaceful
Similarly peaceful and small; compatible water parameters though tank should be spacious enough to avoid competition
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.