Black Lyretail Molly tank mates
Poecilia sphenops
5 rated pairings from the Black Lyretail Molly care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Black Lyretail 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 size, peaceful temperament, and identical water parameter requirements make them ideal companions

Platy
Xiphophorus maculatus
10 gal min · 2.5" adult · Peaceful
Fellow livebearers with matching water needs and compatible peaceful behavior

Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Peaceful invertebrates that help control algae and occupy different ecological niches
Good matches
2 · Compatible with normal care — watch space and numbers.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Small algae-eaters that stay in lower water zones and appreciate the slightly brackish conditions mollies prefer

Endler's Livebearer
Poecilia wingei
10 gal min · 1.5" adult · Peaceful
Smaller livebearers with similar water requirements and peaceful disposition
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.