Can Firemouth Cichlid Live With Neon Tetra?
No, firemouth cichlids are moderately aggressive cichlids that eat neon tetras once they reach adult size.
Why
- Firemouth cichlids grow to 6 inches. Neon tetras stay at 1.5 inches and are easy prey for a fish of that size.
- Firemouth cichlids are cichlids with predatory instincts that develop as they mature past 3 inches.
- Water parameters overlap (75-81F, pH 6.5-7.0), which makes the pairing look viable on paper.
- Firemouths are semi-aggressive and will claim territories large enough to stress or hunt tetras.
- Surviving tetras will be chronically stressed, pale, and prone to illness.
What could go wrong
Tetra losses happen gradually over weeks as the firemouth learns that slow-moving tetras are easy prey.
If you keep them in separate tanks
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 75-81°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.
Better pairings to consider
Firemouth cichlids do well with hardy tetras like serpae or larger rasboras. Neon tetras do well with corydoras or smaller peaceful fish.
Related compatibility questions
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