Half-Black Angelfish tank mates
Pterophyllum scalare
5 rated pairings from the Half-Black Angelfish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Half-Black Angelfish needs at least 30 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.
Cardinal Tetra
Paracheirodon axelrodi
15 gal min · 2" adult · Peaceful
Similar size, peaceful schooling fish that thrive in warm, planted tanks with comparable water parameters
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Tiny algae-eating fish that pose no threat and help maintain tank cleanliness without competing for food
Good matches
2 · Compatible with normal care — watch space and numbers.
Rummy Nose Tetra
Hemigrammus rhodostomus
15 gal min · 2" adult · Peaceful
Small, peaceful schooling fish that won't compete aggressively and prefer similar warm water conditions
Dwarf Gourami
Trichogaster lalius
15 gal min · 3.5" adult · Semi-aggressive
Peaceful labyrinth fish of similar size; may occasionally chase but generally compatible in larger tanks
Use caution
1 · Works in the right setup; read the note before combining.
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.