clupea
From LSJ
κρατίστην εἶναι δημοκρατίαν τὴν μήτε πλουσίους ἄγαν μήτε πένητας ἔχουσαν πολίτας → the best democracy is that in which the citizens are neither very rich nor very poor (Thales/Plutarch)
clŭpĕa: ae, f.,
I a kind of very small river-fish, Plin. 9, 15, 17, § 44.