Cup Coral tank mates
Turbinaria reniformis
5 rated pairings from the Cup Coral care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Cup Coral needs at least 30 gallons on its own; every companion adds to that.
Excellent matches
3 · Same water, complementary zones, no conflict.Ocellaris Clownfish
Amphiprion ocellaris
20 gal min · 3.5" adult · Semi-aggressive
Reef-safe, peaceful, and won't damage coral tissue
Neon Goby
Elacatinus oceanops
20 gal min · 2" adult · Peaceful
Small, non-aggressive, and beneficial as a cleaner fish
Nerite Snail
Neritina natalensis
5 gal min · 1" adult · Peaceful
Algae grazer that won't harm coral or disturb the substrate
Good matches
2 · Compatible with normal care — watch space and numbers.Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.