Marble Angelfish tank mates
Pterophyllum scalare
5 rated pairings from the Marble Angelfish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Marble Angelfish needs at least 30 gallons on its own; every companion adds to that.
Good matches
5 · Compatible with normal care — watch space and numbers.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Peaceful algae eaters that occupy bottom zone and won't compete with mid-water angels
Neon Tetra
Paracheirodon innesi
10 gal min · 1.5" adult · Peaceful
Small schooling fish that stay in groups; too small to trigger predatory response in adult angels
Cardinal Tetra
Paracheirodon axelrodi
15 gal min · 2" adult · Peaceful
Similar water parameter requirements and peaceful temperament; form schools that angels generally ignore
Rummy Nose Tetra
Hemigrammus rhodostomus
15 gal min · 2" adult · Peaceful
Schooling fish with compatible water needs; their group behavior reduces angel aggression
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Nocturnal algae eater that occupies different zones and activity periods than angels
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.