title: fish community MC-May 21 *
design: Metabarcoding libraries were prepared using the primers Euk1391F and EukBr (doi:10.1371/journal.pone.0006372) for the V9-18S region and 12S MiFish_U forward and reverse (doi:10.1098/rsos.150088), respectively, and sequenced by GenomiX4Life (https://www.genomix4life.com/it/) following published protocols (https://dx.doi.org/10.17504/protocols.io.mv2c68e).