Change App Icon

src/main/java/seedu/address/ui/UiManager.java

@@ -20,7 +20,7 @@ public class UiManager implements Ui {
     public static final String ALERT_DIALOG_PANE_FIELD_ID = "alertDialogPane";
 
     private static final Logger logger = LogsCenter.getLogger(UiManager.class);
-    private static final String ICON_APPLICATION = "/images/fishicon.png";
+    private static final String ICON_APPLICATION = "/images/FishAhoyIcon.png";
 
     private Logic logic;
     private MainWindow mainWindow;