S. robustus may refer to: Sclerobunus robustus, a harvestman species that occurs in the United States Scotophilus robustus, the robust yellow bat, a vesper bat species found only in Madagascar Sinocyclocheilus robustus, a ray-finned fish species Solegnathus robustus, the robust pipehorse, a fish species endemic to Australia Spratelloides robustus, the blue sprat, fringe-scale round herring, blue bait or blue sardine, a sprat fish species Sylvilagus robustus, the robust cottontail or Davis Mountains cottontail, a cottontail rabbit species endemic to four mountain ranges in the southwestern United States and adjacent Mexico
Synonyms Sason robustus, a synonym for Sason robustum, a trapdoor spider species only found in southern India, Sri Lanka and the Seychelles Scartomyzon robustus, a synonym for Moxostoma robustum, the robust redhorse or smallfin redhorse, a freshwater fish species of the eastern United States