σμαρίς
From LSJ
ἀλλ' εἰ μὲν ἁγνόν ἐστί σοι Πειθοῦς σέβας, γλώσσης ἐμῆς μείλιγμα καὶ θελκτήριον → but if you have holy reverence for Persuasion, the sweetness and charm of my tongue
English (LSJ)
ίδος, ἡ, a small poor sea-fish,
A Smaris vulgaris, Epich.29, 60, Arist.HA607b22, Opp.H.1.109, etc. [ᾰ: ᾱ only in Marc.Sid.97.]