Can Cardinal Tetra Live With Endler's Livebearer?
Yes, cardinal tetras and endlers share a tank well in 15 gallons or larger, with matching temperature and tight pH overlap.
Why
- Cardinal tetras reach 2 inches and form tight schools in the middle water column.
- Endlers grow only 1-1.8 inches and stay at the top, so they occupy different tank zones.
- Temperature overlap of 73-81F suits both species, with endlers tolerating up to 82F.
- The narrow pH overlap of 6.8-7 keeps both species comfortable without adjustments.
- Endlers are peaceful surface feeders that ignore mid-water tetras entirely.
What could go wrong
Endlers breed prolifically and can overwhelm a 15-gallon tank with fry within months.
Gear for a shared tank
Sized for the 15 gallon minimum this pairing needs. Affiliate links — we earn a small commission if you buy through them.
AquaClear 30 Power Filter
Oversized filtration is what lets you stock two species together without water quality crashing. Rated for a tank slightly larger than the 15 gallon minimum.
Eheim Jager 150W Thermostat Heater
Holds a steady temperature inside the 73-81°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
Keep reading
Planning a community tank?
Check compatibility for any two freshwater species before you buy. Stop guessing, stop returning fish.
Open the compatibility chart →