blenny
Concise Oxford English Dictionary © 2008 Oxford University Press:
blenny/ˈblɛni/
▶noun (pl. blennies) a small spiny-finned fish with scaleless skin and a blunt head, typically found in shallow coastal waters. [Blennius and other genera, family Blenniidae .]
– origin C18: from L. blennius, from Gk blennos ‘mucus’ (because of its mucous coating).
'blenny' also found in these Oxford entries:

