Giant danio tank mates
An 11 cm fast schooling danio that needs real swim space. Beautiful in a large group in a long tank, and disruptive and stressful in anything under 150 cm.
Common mistakeAdding giant danios to a 90L tetra community because they looked like big zebra danios is how keepers invent chronic stress for every fish under 5 cm. Constant high-speed motion needs length and robust neighbours — not a short community kit with neon dither.
Each name below opens a pair check with Giant danio. That check is the decision, not the list itself.
Usually safer companions
Conservative shortlist from this profile. Open a pair page before you buy.
The Giant danio profile lists Bala / silver shark as both safe and a recommended pairing. Bala / silver shark schools in groups of 5 or more, so plan room for the whole group rather than one fish. Bala / silver shark grows bigger than Giant danio (35cm vs 11cm). Stock the Giant danio group large enough to outnumber the Bala / silver shark, or the smaller fish ends up bullied or off food.
The Giant danio profile lists Denison's / red-line torpedo barb as both safe and a recommended pairing. Denison's / red-line torpedo barb schools in groups of 6 or more, so plan room for the whole group rather than one fish.
Risky or situational
May work with more water, a mature system, or a species-only setup. Read the pair page before you experiment.
Betta is rated semi-aggressive, so expect chasing, fin damage, or display behaviour directed at Giant danio. Run the pair checker before stocking.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Temperature ranges barely overlap between the two, so one species ends up living at the edge of its comfort window. Run the pair checker before stocking.
Pea Puffer is flagged as a fin-nipper and Giant danio carries the long-finned risk profile (veil tails, trailing fins). Expect torn fins within days unless the nipper is in a proper group and the long-finned fish has plenty of cover. Pea Puffer is flagged predatory. Equal-size adults usually coexist, but the moment one is stressed, sick, or smaller after a moult, it becomes prey. Pea Puffer is rated semi-aggressive, so expect chasing, fin damage, or display behaviour directed at Giant danio. Run the pair checker before stocking.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Fish to avoid with Giant danio
Predation, aggression, or space rules on this profile. Treat these as poor default mixes.
None flagged as a hard avoid on this profile.
Tank size and groups
- Published minimum for Giant danio: 200L. Group minimum 6 (schooling).
- Compatibility changes when the tank is too short for turning, too little for a real school, or too warm for one species and not the other. That is why pair checks include tank context, not only temperament.
- Nearest litre hub to this minimum: 200L hub.
Easier alternatives to consider
Hardier first-tank names from the library. Still read the profile. Not a substitute for reading this one.
Plan before you buy
Start a pair check with Giant danio, or open a starter plan with the top safer companions in the builder.
Tank hubs: 200L
Related reading
Guides that list other fish with the same trait, so you can plan around the group rather than one row.
- Fish that eat smaller tank mates →
Giant danio may eat anything that fits in its mouth as it grows.
- Schooling & group fish →
Plan the group of 6+ before choosing tank mates.
- Peaceful community fish →
Other peaceful species to shortlist beside Giant danio.
Filtration & heating
A 200L minimum tank for Giant danio needs a filter rated for at least 800L/hr turnover and a heater maintaining 18–26°C.
Similar fish (same category)
- Rainbow / red-tailed black shark · min 200L
- Rosy Barb · min 180L
- Denison's / red-line torpedo barb · min 250L
- Scissortail Rasbora · min 150L
- Gold / Chinese barb · min 120L
- Odessa Barb · min 120L
- Banded leporinus · min 300L
- Black ruby barb · min 100L
Other species that list Giant danio
Reverse lookup: these profiles reference Giant danio under safe or “best with” lists.
Giant danio tank mates — quick answers
- What fish can live with Giant danio?
- Usually safer companions on this hub include Bala / silver shark, Denison's / red-line torpedo barb. Open each pair check before you buy — the list is a shortlist, not a guarantee.
- What tank mates should you avoid with Giant danio?
- Avoid any species that competes for the same territory, eats juveniles of this species' size class, or requires very different water parameters.
- What size tank do Giant danio need for a community?
- 200L is the planning floor for adult swimming space and bioload. A 240L+ tank is the more comfortable long-term footprint. Length and depth matter as much as raw litres for active or territorial fish.