Giant River Prawn tank mates
Macrobrachium rosenbergii
5 rated pairings from the Giant River Prawn care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Giant River Prawn needs at least 55 gallons on its own; every companion adds to that.
Good matches
3 · Compatible with normal care — watch space and numbers.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Small, peaceful algae-eater; avoid large cichlids that may prey on prawns
Ember Tetra
Hyphessobrycon amandae
10 gal min · 0.8" adult · Peaceful
Tiny, fast-moving fish; too small for prawn to threaten
Chili Rasbora
Boraras brigittae
5 gal min · 0.8" adult · Peaceful
Peaceful nano fish; occupy different water zones
Use caution
2 · 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.