GloFish Barb tank mates
Puntigrus tetrazona
4 rated pairings from the GloFish Barb care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. GloFish Barb needs at least 20 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.
GloFish Tetra
Gymnocorymbus ternetzi
15 gal min · 2" adult · Peaceful
Similar size, activity level, and water requirements; both thrive under blue LED lighting
GloFish Danio
Danio rerio
10 gal min · 2" adult · Peaceful
Comparable temperament and energy; both are active schooling fish that do well together
Good matches
2 · Compatible with normal care — watch space and numbers.
Emerald Dwarf Rasbora
Danio erythromicron
10 gal min · 1" adult · Peaceful
Small, peaceful schooling fish; may be nipped occasionally but generally compatible in larger groups
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Nocturnal algae eater that avoids conflict; provides tank maintenance without competing for space
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.