Common bleak extracted from the scales of the common bleak, so-called "Essence Orientale" or "pearl essence", (used in making artificial pearls) which is crystalline guanine. Common bleak The common bleak ("Alburnus alburnus") is a small freshwater coarse fish of the cyprinid family. The body of the bleak is elongated and flat. The head is pointed and the relatively small mouth is turned upwards. The anal fin is long and has 18 to 23 fin rays. The lateral line is complete. The bleak has a shiny silvery colour; and the fins are pointed and colourless. The maximum length is approximately 25 cm. In
Soft-shell crab main species is the blue crab, "Callinectes sapidus", which appears in markets from April to September. In the Deep South region of the United States, "Buster crab" is often a synonym for a plump, meaty soft-shell crab, this usage especially common in the culinary centers such as New Orleans and Charlotte. This is despite the fact that the original meaning of Buster crab referred to either a soft-shell that had yet to complete molting, or to a soft-shell that had died before being provided to a seafood vendor, and was then consumed by the crabber. In Japan, various species are