Species Profile
Upside-Down Catfish
Synodontis nigriventris
Catfishpeaceful
Adult size
4″
Minimum tank
30 gal
Temperature
72–79°F
pH
6–7.5
Schooling
Group of 4+
Water level
top
Diet
Sinking pellets, frozen, flake
Notes
Actually swims upside-down at the surface — feeds on floating food from below.
Photo: en:User:Neale Monks / Wikimedia Commons · Source · CC-BY-SA-3.0