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
Bleak Expectations Bleak Expectations Bleak Expectations is a BBC Radio 4 comedy series that premièred in August 2007. It is a pastiche of the works of Charles Dickens – such as "Bleak House" and "Great Expectations", from which it derives its name – as well as adventure/ science fiction and costume dramas set in the same period, and parodies several of their plot devices (such as cruel guardians, idyllic childhoods interrupted, lifelong friendships, earnest young people), whilst simultaneously tending toward a highly surreal humour along the lines of "The Goon Show". The series has also demonstrated a fondness for allusions to and