PIRANHA (1978, USA, 94m, 15) *** Comedy, Horror, Sci-Fi dist. New World Pictures (USA), United Artists (UK); pr co. New World Pictures; d. Joe Dante; w. John Sayles (based on a story by Richard Robinson and John Sayles); pr. Jon Davison; ph. Jamie Anderson (Metrocolor | 1.85:1); m. Pino Donaggio; ed. Joe Dante, Mark Goldblatt;…