PSI Below 100

It is so nice to have our Pollution Index below 100.  We can do outdoor activity.  Fishermen are out in force at the Punggol Point.  The water is much cleaner but the fishes have not return yet.  So my catch is sparse.  This morning, I caught several flower crabs and fed them to my arowana.  My arowana is worried.  It did not them when the crabs are swimming.  I think only when the crabs stop being active, they get eaten up as I check later and the crabs are gone except of some shells.