Here is the full list of all 20 Fishdom 3: Special Edition (Windows) achievements worth 200 gamerscore.
Use lightning 50 times
Remove 1,000 pieces on a single level
Collect 100 artifacts
Collect 500 units of gold and diamonds
Create 10 matches in 10 seconds
Make a chain of 3 explosive devices
Complete 200 levels
Clear off 120 pieces in one move
Use all types of explosive available on a single level
Earn 1,000,000 coins
Gain enough Experience to reach Level 25
Spend 10,000 coins decorating your aquarium
Get all the backgrounds for your aquarium
Get 10 aquariums
Play the game for an hour
Buy 10 turtles
Receive the highest trophy for 5 beautiful aquariums.
Unlock bonus levels.
Complete 100 levels within golden time.
Buy one fish of each species