The unofficial currency exchange market in Algeria experienced a slight decrease in exchange rates this Tuesday, October 20th. The euro, along with other currencies, saw a minor decline in value on the black market. This information pertains specifically to the informal exchange market within Algeria. The article detailing this fluctuation first appeared on a news platform. Details regarding the extent of the decrease and other impacted currencies were not provided in the source text. This suggests a possible minor shift in the dynamics of currency trading outside of official channels in Algeria. The report highlights the ongoing activity of this informal market, continuing to be monitored for currency trends.