Stuck on last 3
23a Floppy fish, translucent _ I _P _ _
27a Concluded most of the series caused discomfiture O_ E _T _ R _ _
20d Given the tip due to one E _ _ _ _ _ D
looks like Limpid or limpet
Overtires or overtired
Excised ??? but then limpet or limpid does not fit??