Yucatan Molly tank mates
Poecilia velifera
4 rated pairings from the Yucatan Molly care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Yucatan Molly needs at least 40 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.
Platy
Xiphophorus maculatus
10 gal min · 2.5" adult · Peaceful
Nearly identical water requirements and peaceful behavior; both are livebearers with compatible social dynamics
Nerite Snail
Neritina natalensis
5 gal min · 1" adult · Peaceful
Algae-eating snail that prefers hard water; mollies ignore snails and benefit from their cleaning
Good matches
2 · Compatible with normal care — watch space and numbers.
Guppy
Poecilia reticulata
10 gal min · 2" adult · Peaceful
Similar peaceful temperament and water preferences; males may compete for dominance but rarely fight seriously
Harlequin Rasbora
Trigonostigma heteromorpha
10 gal min · 2" adult · Peaceful
Peaceful schooling fish that thrive in similar water conditions and won't compete with mollies
Also recommended alongside Yucatan Molly
Species whose own guides list Yucatan Molly as a tank mate.
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.