No, The Decadent is not a goth band, because they play Punk Rock, while goth music consists of Gothic Rock and its derived genres, like Deathrock, Darkwave, Ethereal Wave, and Coldwave.

If you want to dive into the goth music scene, some of the bands that might appeal to you if you enjoy The Decadent are 45 Grave, Come To Ruin, and Screaming Dead.