S Piscis Austrini is a long period Mira-type variable red giant which ranges between magnitude 8.0 and 14.5 over a period of 271.7 days, and V Piscis Austrini is a semi-regular variable ranging between magnitudes 8.0 and 9.0 over 148 days.
Beta, Delta in Zeta Južne ribe v kitajski astronomiji sestavljajo "Tien Kang" (nebesna vrv).