There is more than one artist with this name:
1) Dead Fish is a Brazilian hardcore punk band from Vitória, Espírito Santo, Brazil. Formed in 1992, they developed their music with intense vocal, initially sung in English then switched to Portuguese, frantic guitar fretwork, bulldozer-like drumming style and bass picking. The lyrics usually range from political and social criticism to daily personal problems, among others.
Their gigs are known for the energetic performances, frantic mosh-pit and stage dives.