Species Profile
Rainbow Shark
Epalzeorhynchos frenatus
Sharkssemi-aggressive
Adult size
6″
Minimum tank
55 gal
Temperature
72–79°F
pH
6.5–7.5
Schooling
Solitary OK
Water level
bottom
Diet
Sinking pellets, algae wafers, frozen
Notes
Iridescent black body with bright red fins; territorial bottom-dweller. Strictly one per tank, multiple rainbows fight constantly until one dies. Provide caves and hiding spots; works in 55gal+ community tanks with mid-water dither fish.
Photo: Gonzalo Valenzuela from Santiago, Chile / Wikimedia Commons · Source · CC-BY-SA-2.0