labre mêlé [France and Belgium] – synonym of Labrus bimaculatus
labre vert [France and Belgium] – synonym of Labrus viridis
labre [France and Belgium] – synonym of Labrus merula
labru [France and Belgium] – synonym of Chelon labrosus
Labrus turdus: Bini, 1965: 171, 1 fig. – synonym of Labrus viridis
lagoon goby [UK and USA] – synonym of Knipowitschia panizzae
Laimargue de la Mediterranee [France and Belgium] – synonym of Somniosus rostratus
Laimargue du Groenland [France and Belgium] – synonym of Somniosus microcephalus
Lampanyctus resplendens: Albuquerque, 1954-1956: 353. – synonym of Notoscopelus resplendens
lampris [France and Belgium] – synonym of Lampris guttatus
lamproie fluviatile [France and Belgium] – synonym of Lampetra fluviatilis
lamproie marine [France and Belgium] – synonym of Petromyzon marinus
lampuga [former Yugoslavia] – synonym of Coryphaena hippurus
lamrini [Tunesia, Algeria, Morocco] – synonym of Muraena helena
lancet-fish [UK and USA] – synonym of Alepisaurus ferox
lançon [France and Belgium] – synonym of Hyperoplus immaculatus
lançon [France and Belgium] – synonym of Hyperoplus lanceolatus
langaneu [France and Belgium] – synonym of Symphodus roissali
lange schar [Netherlands and Belgium] – synonym of Hippoglossoides platessoides
Large finned shark [UK and USA] – synonym of Carcharhinus plumbeus
large scaled gurnard [UK and USA] – synonym of Lepidotrigla cavillone
large-eye dentex ([UK and USA] – synonym of Dentex macrophthalmus
large-eyed hairtail [UK and USA] – synonym of Trichiurus lepturus
Large-eyed rabbitfish [UK and USA] – synonym of Hydrolagus mirabilis
large-scaled goby [UK and USA] – synonym of Thorogobius macrolepis
large-scaled scorpion fish [UK and USA] – synonym of Scorpaena scrofa
large-spotted dogfish [UK and USA] – synonym of Scyliorhinus stellaris
Largenose catshark [UK and USA] – synonym of Apristurus nasutus
Largenose fish [UK and USA] – synonym of Ataxolepis apus
launce [UK and USA] – synonym of Hyperoplus immaculatus
launce [UK and USA] – synonym of Hyperoplus lanceolatus
leaf searsid [UK and USA] – synonym of Platytroctegen mirus
Leafscale gulper shark [UK and USA] – synonym of Centrophorus squamosus
leaping mullet [UK and USA] – synonym of Liza saliens
Ledoux, 1970: 353-356, fig. 20-21. – synonym of Dalatias licha
leerfish [UK and USA] – synonym of Lichia amia
lefâa [Tunesia, Algeria, Morocco] – synonym of Muraena helena
legless searsid [UK and USA] – synonym of Platytroctes apus
Leim and Scott, 1966, 155: 20, fig. – synonym of Myxine glutinosa
Lemon shark [UK and USA] – synonym of Negaprion brevirostris
lemon sole [UK and USA] – synonym of Microstomus kitt
leng [Netherlands and Belgium] – synonym of Molva molva
leopard-spotted goby [UK and USA] – synonym of Thorogobius ephippiatus
lépadogastère à deux taches [France and Belgium] – synonym of Diplecogaster bimaculata
lépadogastère à petitetête [France and Belgium] – synonym of Apletodon dentatus
lépadogastère de candolle [France and Belgium] – synonym of Lepadogaster candollei
lépadogastère de goüan [France and Belgium] – synonym of Lepadogaster lepadogaster
Leptacanthichthys gracilispinis
Leptoderma ? lubricum Abe, Marumo and Kawaguchi, 1965 – synonym of Leptoderma sp.
lesser african threadfin [UK and USA] – synonym of Galeoides decadactylus
Lesser amberjack [UK and USA] – synonym of Seriola fasciata
lesser sand-eel [UK and USA] – synonym of Ammodytes marinus
lesser sand-eels [UK and USA] – synonym of Ammodytes tobianus
lesser weever [UK and USA] – synonym of Echiichthys vipera
lesueur's goby [UK and USA] – synonym of Lesueurigobius suerii
Lesueurigobius heterofasciatus
lézard [France and Belgium] – synonym of Synodus saurus
lica [former Yugoslavia] – synonym of Lichia amia
liche lirio [France and Belgium] – synonym of Campogramma glaycos
liche vadigo [France and Belgium] – synonym of Campogramma glaycos
liche [France and Belgium] – synonym of Lichia amia
lichtend sprotje [Netherlands and Belgium] – synonym of Maurolicus muelleri
liechtenstein's goby [UK and USA] – synonym of Corcyrogobius liechtensteini
lieu jaune [France and Belgium] – synonym of Pollachius pollachius
lieu noir [France and Belgium] – synonym of Pollachius virens
limace de mer [France and Belgium] – synonym of Liparis liparis
limande [France and Belgium] – synonym of Limanda limanda
limande-sole [France and Belgium] – synonym of Microstomus kitt
ling [UK and USA] – synonym of Molva molva
lingue bleue [France and Belgium] – synonym of Molva dipterygia
lingue [France and Belgium] – synonym of Molva molva
lippu pelon [France and Belgium] – synonym of Brachydeuterus auritus
lisica [former Yugoslavia] – synonym of Alopias vulpinus
list bradavkar [former Yugoslavia] – synonym of Solea lascaris
list crnorub [former Yugoslavia] – synonym of Solea kleinii
list pecatar [former Yugoslavia] – synonym of Microchirus ocellatus
list prugavac [former Yugoslavia] – synonym of Microchirus variegatus
list [former Yugoslavia] – synonym of Solea vulgaris
listao [France and Belgium] – synonym of Katsuwonus pelamis
listaoun [Tunesia, Algeria, Morocco] – synonym of Katsuwonus pelamis
listnosan [former Yugoslavia] – synonym of Solea nasuta
Little gulper shark [UK and USA] – synonym of Centrophorus uyato
Little sleeper shark [UK and USA] – synonym of Somniosus rostratus
little tunny [UK and USA] – synonym of Euthynnus alletteratus
lizard fish [UK and USA] – synonym of Saurida undosquamis
lizard fish [UK and USA] – synonym of Synodus saurus
lkars [Tunesia, Algeria, Morocco] – synonym of Eugomphodus taurus
lom [Netherlands and Belgium] – synonym of Brosme brosme
lompe [France and Belgium] – synonym of Cyclopterus lumpus
lompje [Netherlands and Belgium] – synonym of Ciliata mustela
Long nosed skate [UK and USA] – synonym of Raja oxyrinchus
long rough dab [UK and USA] – synonym of Hippoglossoides platessoides
long-finned bream [UK and USA] – synonym of Taractichthys longipinnis
Long-finned whalefish [UK and USA] – synonym of Cetostoma regani
long-neck croaker [UK and USA] – synonym of Pseudotolithus typus
longbeard grenadier [UK and USA] – synonym of Gadomus dispar
Longbill spearfish [UK and USA] – synonym of Tetrapturus pfluegeri
longfin gurnard [UK and USA] – synonym of Aspitrigla obscura
Longfin mako [UK and USA] – synonym of Isurus paucus
longfin smooth-head [UK and USA] – synonym of Conocara macroptera
longjaw snake eel [UK and USA] – synonym of Ophisurus serpens
longnose lancetfish [UK and USA] – synonym of Alepisaurus ferox
Longnose spurdog [UK and USA] – synonym of Squalus blainvillei
Longnose velvet dogfish [UK and USA] – synonym of Centroscymnus crepidater
longspined bullhead [UK and USA] – synonym of Taurulus bubalis
longspined sea-scorpion [UK and USA] – synonym of Taurulus bubalis
loosescale smooth-head [UK and USA] – synonym of Einara macrolepis
loup de mer [France and Belgium] – synonym of Anarhichas lupus
loup [France and Belgium] – synonym of Dicentrarchus labrax
loup [France and Belgium] – synonym of Dicentrarchus punctatus
lousefish [UK and USA] – synonym of Phtheirichthys lineatus
louvereau [France and Belgium] – synonym of Luvarus imperialis
Lowfin gulper shark [UK and USA] – synonym of Centrophorus lusitanicus
Lozano Rey, 1928: 376 (Spain) | Tortonese, 1956: 106, fig. 52 (Mediterranean) | Albuquerque, 1954-1956: 87 (Portugal, Madeira, A – synonym of Isurus oxyrinchus
lozano's goby [UK and USA] – synonym of Pomatoschistus lozanoi
Lozano's grondel [Netherlands and Belgium] – synonym of Pomatoschistus lozanoi
luc [former Yugoslavia] – synonym of Euthynnus alletteratus
lucky proach [UK and USA] – synonym of Taurulus bubalis
luizi [Tunesia, Algeria, Morocco] – synonym of Atherina hepsetus
lumbrak [former Yugoslavia] – synonym of Symphodus tinca
lumpsucker [UK and USA] – synonym of Cyclopterus lumpus
Lusitanian cownose ray [UK and USA] – synonym of Rhinoptera marginata
luvar [UK and USA] – synonym of Luvarus imperialis