Rosy Barb tank mates
Pethia conchonius
5 rated pairings from the Rosy Barb care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Rosy Barb needs at least 25 gallons on its own; every companion adds to that.
Excellent matches
1 · Same water, complementary zones, no conflict.
Good matches
3 · Compatible with normal care — watch space and numbers.
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Peaceful bottom-dweller that won't compete for mid-water space; helps control algae
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Peaceful algae eater that occupies different ecological niche; barbs generally ignore snails
Bolivian Ram
Mikrogeophagus altispinosus
20 gal min · 3.5" adult · Peaceful
Peaceful dwarf cichlid with similar temperature preferences; occupies bottom-middle zones
Use caution
1 · Works in the right setup; read the note before combining.
Also recommended alongside Rosy Barb
Species whose own guides list Rosy Barb as a tank mate.
Arulius Barb
Dawkinsia arulius
55 gal min · 5" adult · Semi-aggressive
Asian Bumblebee Catfish
Pseudomystus siamensis
30 gal min · 5" adult · Semi-aggressive
Canadian Waterweed
Elodea canadensis
Curly Waterweed
Lagarosiphon major
Harlequin Shark
Labeo cyclorhynchus
55 gal min · 6" adult · Semi-aggressive
Koi
Cyprinus rubrofuscus
250 gal min · 24" adult · Peaceful
Melon Barb
Haludaria fasciata
30 gal min · 3" adult · Semi-aggressive
Rosy Red Minnow
Pimephales promelas
10 gal min · 2.5" adult · Peaceful
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.