Cardinal Tetra vs Guppy

Side-by-side care comparison to help you choose.

Cardinal TetraGuppy
DifficultyIntermediateBeginner
Adult size1.5-2 inches1.5-2.5 inches
Lifespan3-5 years2-3 years
Min tank size10 gallons10 gallons
Water temp74-80F74-82°F
pH6.0-7.06.8-7.8
Temperamentpeacefulpeaceful
Tank matesOther peaceful community fish such as small rasboras, tetras, and dwarf cichlids.Other peaceful community fish like tetras, rasboras, corydoras, mollies, and platies.
DietHigh-quality flakes, micro pellets, and frozen foods like bloodworms and brine shrimp; feed small portions 2-3 times daily.Omnivorous; feed high-quality flake food daily, supplemented with live or frozen foods like brine shrimp or daphnia 2-3 times per week.