Possible Clues:

• Cultured
• Discerning part of a fish skulking in water plant
• Like some sugar
• Pure friend at sea taking in end of cruise
• May be made to pay in a second time, perhaps, and not in a very regular way
• Soldiers given penalty for being civilized
• Purified, oil say
• Having polish, Ruby eats well
• Elegant, but penalised again
• Cultivated, as sugar often is