tabinja bjalica [former Yugoslavia] – synonym of Phycis blennoides
tabinja mrkulja [former Yugoslavia] – synonym of Phycis phycis
tabinjak mracnjak [former Yugoslavia] – synonym of Gadella maraldi
tacaud norvégien [France and Belgium] – synonym of Trisopterus esmarki
tacaud [France and Belgium] – synonym of Trisopterus luscus
Tadpole fish [UK and USA] – synonym of Ijimaia loppei
tadpole-fish [UK and USA] – synonym of Raniceps raninus
taghoualt [Tunesia, Algeria, Morocco] – synonym of Plectorhinchus mediterraneus
tambour [France and Belgium] – synonym of Serranus hepatus
tamboutcho [Tunesia, Algeria, Morocco] – synonym of Serranus hepatus
tanuda [Tunesia, Algeria, Morocco] – synonym of Spondyliosoma cantharus
tarbot [Netherlands and Belgium] – synonym of Psetta maxima
targeur [France and Belgium] – synonym of Zeugopterus punctatus
tarpon argente [France and Belgium] – synonym of Tarpon atlanticus
tarpon [UK and USA] – synonym of Tarpon atlanticus
tassergal [France and Belgium] – synonym of Pomatomus saltator
taupe [France and Belgium] – synonym of Lamna nasus
tchoucla [Tunesia, Algeria, Morocco] – synonym of Spicara smaris
tchouya [Tunesia, Algeria, Morocco] – synonym of Diplodus puntazzo
tebrelli [Tunesia, Algeria, Morocco] – synonym of Auxis rochei
thazard blanc [France and Belgium] – synonym of Scomberomorus tritor
thazard-bâtard [France and Belgium] – synonym of Acanthocybium solandri
thickback sole [UK and USA] – synonym of Microchirus variegatus
thicklip grey mullet [UK and USA] – synonym of Chelon labrosus
thinlip grey mullet [UK and USA] – synonym of Liza ramada
thon a nageoires jaunes [France and Belgium] – synonym of Thunnus albacares
thon blanc [France and Belgium] – synonym of Thunnus alalunga
thon obèse [France and Belgium] – synonym of Thunnus obesus
thon rouge [France and Belgium] – synonym of Thunnus thynnus
thone [Tunesia, Algeria, Morocco] – synonym of Thunnus alalunga
thone [Tunesia, Algeria, Morocco] – synonym of Thunnus thynnus
thonine [France and Belgium] – synonym of Euthynnus alletteratus
thornback ray [UK and USA] – synonym of Raja clavata
thread-tail [UK and USA] – synonym of Stylephorus chordatus
threadfin grenadier [UK and USA] – synonym of Gadomus longifilis
threadfin rockling [UK and USA] – synonym of Onogadus ensis
threadfin smooth-head [UK and USA] – synonym of Talismania mekistonema
Three subspecies have been recognized: the Atlantic, the Mediterranean (including Black Sea), and the Baltic ones. However, the – synonym of Sprattus sprattus
three-bearded rockling [UK and USA] – synonym of Gaidropsarus vulgaris
Thresher shark [UK and USA] – synonym of Alopias vulpinus
Thunnus obesus: Gibbs and Collette, 1967: 66. – synonym of Thunnus obesus
tiendoornige stekelbaars [Netherlands and Belgium] – synonym of Pungitius pungitius
Tiger shark [UK and USA] – synonym of Galeocerdo cuvieri
tinar [Tunesia, Algeria, Morocco] – synonym of Diplodus vulgaris
toadfish [UK and USA] – synonym of Halobatrachus didactylus
tompot blenny [UK and USA] – synonym of Parablennius gattorugine
tompot [UK and USA] – synonym of Parablennius gattorugine
tong [Netherlands and Belgium] – synonym of Solea vulgaris
tongschar [Netherlands and Belgium] – synonym of Microstomus kitt
tongue-sole [UK and USA] – synonym of Symphurus nigrescens
tonijn [Netherlands and Belgium] – synonym of Thunnus thynnus
toonhaai [Netherlands and Belgium] – synonym of Mustelus asterias
toothed crevally [UK and USA] – synonym of Pseudocaranx dentex
toothed goby [UK and USA] – synonym of Deltentosteus colonianus
toothed grouper [UK and USA] – synonym of Epinephelus caninus
toothless smooth-head [UK and USA] – synonym of Einara edentula
tope [UK and USA] – synonym of Galeorhinus galeus
topknot [UK and USA] – synonym of Zeugopterus punctatus
torpille marbrée [France and Belgium] – synonym of Torpedo marmorata
torpille noire [France and Belgium] – synonym of Torpedo nobiliana
torpille ocellée [France and Belgium] – synonym of Torpedo torpedo
torsk [UK and USA] – synonym of Brosme brosme
tortonese's goby [UK and USA] – synonym of Pomatoschistus tortonesei
Tortonese's stingray [UK and USA] – synonym of Dasyatis tortonesei
toun ahmar [Tunesia, Algeria, Morocco] – synonym of Thunnus thynnus
trachyptere [France and Belgium] – synonym of Trachipterus arcticus
trachyptère [France and Belgium] – synonym of Trachipterus trachypterus
Trachyrhynchus trachyrhynchus: Ibanez, 1977: 213-230, 5 fig. – synonym of Trachyrhynchus trachyrhynchus
transparent goby [UK and USA] – synonym of Aphia minuta
trekkervis [Netherlands and Belgium] – synonym of Balistes carolinensis
tricorne arctique [France and Belgium] – synonym of Gymnacanthus tricuspis
trident [France and Belgium] – synonym of Raniceps raninus
trigger fish [UK and USA] – synonym of Balistes carolinensis
tripletail [UK and USA] – synonym of Lobotes surinamensis
tripodfish [UK and USA] – synonym of Bathypterois grallator
trnobokan plosac [former Yugoslavia] – synonym of Caranx crysos
trogue [France and Belgium] – synonym of Atherina presbyter
trompetterzeenaald [Netherlands and Belgium] – synonym of Syngnathus typhle
trout [UK and USA] – synonym of Salmo trutta
truie [France and Belgium] – synonym of Scorpaena scrofa
truite d'europe [France and Belgium] – synonym of Salmo trutta
truite de mer [France and Belgium] – synonym of Salmo trutta
trumpeter perch [UK and USA] – synonym of Pelates quadrilineatus
trup [former Yugoslavia] – synonym of Katsuwonus pelamis
tub gurnard [UK and USA] – synonym of Trigla lucerna
tube-fish [UK and USA] – synonym of Trigla lucerna
tubenose goby [UK and USA] – synonym of Proterorhinus marmoratus
tuna zutoperka [former Yugoslavia] – synonym of Thunnus albacares
tunina [France and Belgium] – synonym of Euthynnus alletteratus
tunj [former Yugoslavia] – synonym of Thunnus thynnus
turbot [France and Belgium] – synonym of Psetta maxima
turbot [UK and USA] – synonym of Psetta maxima
twaite shad [UK and USA] – synonym of Alosa fallax
Two subspecies are recognized (Furnestin and Vincent, 1958). – synonym of Alosa fallax
two-spotted clingfish [UK and USA] – synonym of Diplecogaster bimaculata
two-spotted goby [UK and USA] – synonym of Gobiusculus flavescens
twohorn sculpin [UK and USA] – synonym of Icelus bicornis
twohorned sculpin [UK and USA] – synonym of Icelus spatula
Type: apparently lost. – synonym of Bathysaurus ferox
Type: unknown. – synonym of Isurus oxyrinchus
tyulka sprat [UK and USA] – synonym of Clupeonella cultriventris