Ruby Tetra tank mates
Axelrodia riesei
6 rated pairings from the Ruby Tetra care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Ruby Tetra needs at least 5 gallons on its own; every companion adds to that.
Excellent matches
4 · Same water, complementary zones, no conflict.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Peaceful bottom-dweller with identical water requirements; won't compete for space or food
Red Cherry Shrimp
Neocaridina davidi
5 gal min · 1.2" adult · Peaceful
Shares preference for planted tanks and soft acidic water; no predation risk at adult size
Dwarf Hairgrass
Eleocharis parvula
Foreground plant that provides shelter and creates the heavily planted environment they prefer
Anubias Nana
Anubias barteri var. nana
Low-light plant ideal for nano tanks; provides hiding spots without requiring high maintenance
Good matches
1 · Compatible with normal care — watch space and numbers.
Use caution
1 · Works in the right setup; read the note before combining.Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.