noun

• Any of various fish with yellow fins.
• especially, yellowfin tuna (Thunnus albacares, in family Scombridae)
• yellowfin bream, any of several species in family Sparidae
• yellowfin croaker (Umbrina roncador, in family Sciaenidae)
• yellowfin cutthroat trout (†Oncorhynchus clarkii macdonaldi, in the family Salmonidae)
• yellowfin fairy wrasse (Cirrhilabrus flavidorsalis, in family Labridae)
• yellowfin grouper (Mycteroperca venenosa, in family Serranidae)
• yellowfin madtom (Noturus flavipinnis, in family Ictaluridae)
• yellow-fin perchlet (Ambassis elongatus, in family Ambassidae)
• yellowfin pike (Dinolestes lewini, in family Dinolestidae)
• yellowfin sea bream, any of several species in family Sparidae
• yellowfin sole (Limanda aspera)
• yellowfin surgeon (Acanthurus xanthopterus, in family Acanthuridae)
• yellowfin whiting (Sillago schomburgkii, in family Sillaginidae)