Hundreds of dead fish appear, 'causing concern' in the Black river in Argentina.Residents of Villa Rio Black released through the social network Facebook the presence of dead fish along the river. They said it’s not the first time they appear hundreds of dead fish on the spot and ask the authorities to take action on the matter. This morning Centener fish found floating dead on the shore of the Black River. Concerned about the situation, neighbors alerted the community through the social network Facebook and then gained significant impact, among which stressed that “it is not the first time they appear dead fish in there.”  Significantly, it is a place where many people usually have fished and where many children choose to swim during hot summer days. Given this fact, the neighbors alerted and asked the relevant authorities to use the site and verify the dangerousness of the situation and alert the community if the case of water pollution. More