ruff 3 
(r
ŭf)
n.1. also ruffe Any of several marine fishes of the family Centrolophidae, usually having spiny dorsal fins.
2. A small edible fish (Arripis georgianus) of coastal and estuarine waters of southern Australia. Also called roughy.
3. Variant of ruffe.
[Middle English rowe, roffe, ruffe, any of various fishes, especially Gymnocephalus cernuus, perhaps from variant of rough, rough; see ROUGH, or from Medieval Latin rufus, a kind of fish (perhaps from Latin rūfus, red, tawny; see RUFOUS).]