White Medaka tank mates
Oryzias latipes
6 rated pairings from the White Medaka care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. White Medaka needs at least 10 gallons on its own; every companion adds to that.
Excellent matches
4 · Same water, complementary zones, no conflict.
Emerald Dwarf Rasbora
Danio erythromicron
10 gal min · 1" adult · Peaceful
Similar size, peaceful temperament, and comparable water requirements make them ideal companions
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Peaceful algae eaters that share similar water conditions and do not compete for food
Dwarf Hairgrass
Eleocharis parvula
Foreground plant that provides spawning sites and shelter without competing for space
Ricefish
Oryzias woworae
10 gal min · 1.5" adult · Peaceful
Closely related species with identical care requirements and compatible peaceful behavior
Good matches
2 · Compatible with normal care — watch space and numbers.
Red Cherry Shrimp
Neocaridina davidi
5 gal min · 1.2" adult · Peaceful
Peaceful invertebrates that occupy different water zones; medaka may occasionally eat shrimplets
Amano Shrimp
Caridina multidentata
10 gal min · 2" adult · Peaceful
Larger shrimp that are less likely to be predated upon; excellent algae control
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.