Marble Molly tank mates
Poecilia sphenops
5 rated pairings from the Marble Molly care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Marble Molly needs at least 20 gallons on its own; every companion adds to that.
Excellent matches
3 · Same water, complementary zones, no conflict.
Guppy
Poecilia reticulata
10 gal min · 2" adult · Peaceful
Similar peaceful temperament and water parameter requirements; both thrive in community settings
Platy
Xiphophorus maculatus
10 gal min · 2.5" adult · Peaceful
Fellow livebearers with identical care needs and compatible peaceful behavior
Anubias Nana
Anubias barteri var. nana
Hardy plant that provides shelter and won't be uprooted by mollies' activity
Good matches
2 · Compatible with normal care — watch space and numbers.
Neon Tetra
Paracheirodon innesi
10 gal min · 1.5" adult · Peaceful
Small schooling fish that occupy different water zones and have compatible water parameters
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Peaceful invertebrate that helps control algae without competing for food or space
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.