Blind Cave Tetra tank mates
Astyanax mexicanus
4 rated pairings from the Blind Cave Tetra care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Blind Cave Tetra needs at least 20 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.
Neon Tetra
Paracheirodon innesi
10 gal min · 1.5" adult · Peaceful
Similar size, peaceful temperament, and identical water parameter requirements make them ideal companions
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Small, peaceful algae eaters that thrive in similar conditions and won't compete for food
Good matches
2 · Compatible with normal care — watch space and numbers.
Rummy Nose Tetra
Hemigrammus rhodostomus
15 gal min · 2" adult · Peaceful
Compatible schooling fish with matching water requirements and peaceful behavior
Red Cherry Shrimp
Neocaridina davidi
5 gal min · 1.2" adult · Peaceful
Small invertebrates that occupy different ecological niches; ensure adequate hiding places for shrimp
Also recommended alongside Blind Cave Tetra
Species whose own guides list Blind Cave Tetra as a tank mate.
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.