Species Profile
Rummynose Tetra
Hemigrammus rhodostomus
Tetraspeaceful
Adult size
2″
Minimum tank
20 gal
Temperature
75–82°F
pH
5.5–7
Schooling
Group of 6+
Water level
mid
Diet
Flake, micro pellets, frozen
Notes
Bright red head on a silver torpedo body with a striped tail. Schools tighter than almost any other tetra, making them a visual centerpiece. Sensitive water-quality bellwether; the red head fades fast when nitrate or pH drifts.
Photo: User:Lerdsuwa / Wikimedia Commons · Source · CC-BY-SA-3.0