Species Comparison
Cardinal Tetra vs Penguin Tetra
Verdict:Compatible
Side-by-side specs
Tetras
Family
Tetras
2″
Adult size
3″
20gal
Min tank
20gal
73–81°F
Temperature
72–82°F
4.5–7
pH
5.8–7.5
peaceful
Temperament
peaceful
6+
Schooling
6+
mid
Water level
mid