Spotted Danio tank mates
Danio nigrofasciatus
5 rated pairings from the Spotted Danio care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Spotted Danio needs at least 10 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.
Good matches
3 · Compatible with normal care — watch space and numbers.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Peaceful algae eater that occupies different water zones and won't compete
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Peaceful invertebrate that helps with algae control without interfering with active fish
Dwarf Hairgrass
Eleocharis parvula
Foreground plant that provides cover and breeding substrate without hindering swimming space
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.