Can Buenos Aires Tetra Live With Guppy?
Yes, Buenos Aires tetras and guppies coexist in 30 gallons or larger, and the wide temperature overlap (72-82F) covers both species comfortably.
Why
- Buenos Aires tetras reach 2.5-3 inches. Guppies are 1.5-2.5 inches. The size difference is noticeable but guppies are fast enough to avoid harassment.
- Both species are active swimmers. Guppies dart through open water; Buenos Aires tetras patrol in a group. Speed on both sides prevents bullying.
- Temperature range 72-82F spans the upper end of guppy comfort and the lower end of Buenos Aires tolerance. A tank at 76-78F suits both.
- pH 7.0-7.8 covers alkaline-preferring livebearers and tetras that tolerate harder water.
- A 30-gallon minimum gives the tetras room to form a school and the guppies space to breed without interference.
What could go wrong
Buenos Aires tetras are known to pick at plants. Heavily planted tanks with sensitive species like vals may take damage, but guppy plants like java moss survive fine.
Gear for a shared tank
Sized for the 30 gallon minimum this pairing needs. Affiliate links — we earn a small commission if you buy through them.
AquaClear 70 Power Filter
Oversized filtration is what lets you stock two species together without water quality crashing. Rated for a tank slightly larger than the 30 gallon minimum.
Eheim Jager 200W Thermostat Heater
Holds a steady temperature inside the 72-82°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.
Related compatibility questions
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