Lemon Tetra (Hyphessobrycon pulchripinnis)

Hyphessobrycon pulchripinnis carries a soft yellow wash across the body that intensifies with good diet and lighting, paired with a red eye and a black-edged anal fin that give it more visual structure than the color alone suggests. It comes out of Amazon tributaries where it shoals in loose, mixed-species groups rather than tight single-species columns, and it behaves the same way in a home tank, calm and unbothered by neighbors. A genuinely underrated color note next to the more saturated reds and blues most people reach for first.

Care level: Easy · Temperament: Peaceful, shoaling · Max size: ~2" · Min tank: 20 gal · Diet: Omnivore, flake/micro-pellet