These are the common names of Wolfsbarsch. At www.fishbase.org (very important) you'll find pictures und further information.
http://www.fishbase.org/Summary/SpeciesSummar...

The URL for the common names
http://www.fishbase.org/ComNames/CommonNamesL...
Bass Ireland Vernacular
Bass Isle of Man Vernacular
Bass UK Vernacular
Capemouth UK Vernacular
Common bass UK Vernacular
European bass USA AFS
European seabass UK FAO
King of the mullets UK Vernacular
Sea bass USA Vernacular
Sea dace UK Vernacular
Sea perch UK Vernacular
White mullet UK Vernacular
White salmon UK/US Vernacular

2. Teil:

In the USA sea bass is the vernacular name for a lot of species, e.g.:
Centropristis fuscula
Paralabrax callaensis
Lateolabrax japonicus
Paralabrax nebulifer
Paralabrax maculatofasciatus
Paralabrax clathratus
Polyprion oxygeneios
Centropristis ocyurus
Dicentrarchus labrax
Stereolepis gigas
Paranthias furcifer
Dicentrarchus punctatus
Centropristis striata
Acanthistius brasilianus

Maybe you should ask for the latin name.

"Fish", a comprehensive book by Sophie Grigson and her husband William Black

in French: loup de mer
which, incidentally, is also translated as catfish