Fish intelligence in paradise fish ("Macropodus opercularis") which avoid places where they have experienced a single attack by a predator and continue to avoid for many months. A number of studies have shown that fish can retain information for months or years. Anecdotally, channel catfish ("Ictalurus punctatus") can remember the human voice call announcing food five years after last hearing that call. Goldfish remember the colour of a tube dispensing food one year after the last tube presentation. Sockeye salmon still react to a light signal that precedes food arrival up to eight months since the last reinforcement. Some common rudd and
Fish marketing seafood to individual consumers, or to both. Retail fish markets, a type of wet market, often sell street food as well. The fundamental meaning of "un chasse-marée" was "a wholesale fishmonger", originally on the Channel coast of France and later, on the Atlantic coast as well. He bought in the coastal ports and sold in inland markets. However, this meaning is not normally adopted into English. The name for such a trader in Britain, from 1500 to 1900 at least, was 'rippier'. Fish marketing Fish marketing is the marketing and sale of fish products. The live fish trade is a