Cool! I'm traveling this week so won't get to my Win10 PC until late tomorrow. Can't wait to try it out. 

Finally reached 2241 to play with the new blockers. They are adding quite a bit of difficulty to the fill the heart level. You may have noticed that these blockers are placed along the path that the hearts travel. Hit the light pink blocker once will turn it into purple one. Hit the purple one TWICE will destroy it. 
Here's the catch, if the heart is advanced and hit the new blocker (pink or purple one), it will BOUNCE BACK. The heart can destroy the purple one after hitting it twice BUT it will bounce back one spot.
2241 is kind of like a tutorial so a high number of moves are allowed and it is easy to complete. However, I can see these blockers will make the fish level much more difficult as extra hits are needed to advance the hearts.

Enjoy