Twait shad are silvery, sometimes with a bronzy tinge, and there are a distinctive row of six to ten large dark spot just behind the gill cover though these may fade when the fish is dead. The adult length is typically . The twait shad is found in most of Europe and all countries bordering the Mediterranean Sea. "Alosa fallax" has a similar lifecycle to "A. alosa" (allis shad). They are known to live in sympatry. Some studies have suggested "A. fallax" and "A. alosa" species can hybridize. They are anadromous species, like many other species in the genus "Alosa". However, some
Dorab wolf-herring Dorab wolf-herring The dorab wolf-herring ("Chirocentrus dorab") is a fish species from the "Chirocentrus" genus of the Chirocentridae family. It is a coastal fish, silvery below and bright blue above. It is found in both marine and brackish or estuarine waters, feeding on smaller fish and possibly crustaceans. "Chirocentrus" is from the Greek "cheir" meaning "hand" and "kentron" meaning "sting". Dorab is from the Arabic language word "darrab" (ضرّاب) and the word is probably a corrupted form of "durubb" (دُرُبّ) the name for goldfish in Arabic. It has another Arabic name, "lisan" (لسان) which means "tongue". Indo-Pacific: probably throughout the