Blacktail

[…] the blacke taile Perch [which ſome take for a Ruffe, others for a ſea Breame:]

Melarunus, the Black-tail, a kind of Perch of Ruff, a Fiſh; it alſo taken for a Sea-bream: […]

A perch-like fish of European waters, the blacktail, striped or stone perch, is also known as a ruff or ruffe.