Tetracanthus

Tetracanthus (Greek "four spines") is an epithet for several different species:


 * Nandopsis tetracanthus, a fish in the genus Nandopsis
 * Neolamprologus tetracanthus, a fish
 * Scatophagus tetracanthus, a fish in the genus Scatophagus
 * Zelus tetracanthus, an insect in the genus Zelus
 * Echinocactus tetracanthus, synonym of Parodia erinacea, a cactus in the genus Parodia