Today will be mostly sunny with highs around 40. The National Weather Service has issued an advisory warning commuters to watch out for icy patches on roads as temperatures dipped below freezing last night. The photo is a fish at The Reef in Adams Morgan. Juvenile Homicide Up in 2004 in D.C. The D.C. Council will issue a report today which finds that in 2004, all of the victims of juvenile homicide in the…