Peristera (Greek: Περιστέρα, feminine form of pigeon), also Aspro, locally Xero (meaning dry), is a Greek island in the Sporades. It is administratively part of the municipality of Alonnisos and is also directly east of the namesake island. The 1991 census read three inhabitants, making it one of the smallest municipal district in the Northern Sporades. The tiny settlement became abandoned in the mid to late-1990s. The 2001 census reported a population of five inhabitants.