Can Discus Live With Guppy?
No, discus and guppies do not belong together because discus require temperatures of 82-88F that stress guppies, and guppies can transmit diseases to discus.
Why
- Discus require water temperatures of 82-88F to thrive, which is significantly warmer than the 72-82F range guppies tolerate.
- Guppies kept at 82F or higher experience accelerated metabolism, shortened lifespans, and increased stress.
- Guppies are active swimmers and may harass discus, which prefer calm water and can be intimidated by fast-moving tankmates.
- Guppies are prone to parasites and bacterial infections that can devastate discus populations in a shared tank.
- Discus are slow eaters and may not get enough food if guppies intercept flakes and pellets before they sink.
What could go wrong
Guppies introduce pathogens into the discus tank, causing outbreaks that are difficult to treat at high temperatures where medication metabolizes quickly.
If you keep them in separate tanks
Sized for the 55 gallon minimum this pairing needs. Affiliate links — we earn a small commission if you buy through them.
Fluval 307 Performance Canister Filter
Oversized filtration is what lets you stock two species together without water quality crashing. Rated for a tank slightly larger than the 55 gallon minimum.
Eheim Jager 300W Thermostat Heater
Holds a steady temperature inside the 82-82°F window both species need.
API Freshwater Master Test Kit
Keep ammonia, nitrite, and nitrate in check. Two-species tanks have more bioload and less margin for error than single-species setups.
Better pairings to consider
Discus pair well with cardinal tetras, rummy-nose tetras, or corydoras that tolerate high temperatures. Guppies do well in community tanks with fish that prefer 72-78F.
Related compatibility questions
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