本次更新内容：
1、新增2个海鱼包共48种
2、新增礁石3种，珊瑚24种
3、新增海沙6种
4、新增海缸壁纸20张
5、新增海鱼收集对应的成就2个

新增海缸玩法：
出售稀有及以上品质的7星淡水成鱼，获得新的货币-贝壳。贝壳可用于购买咸水鱼缸对应的新鱼苗和珊瑚等装饰。

This update content:
1. Added 2 new marine fish packs with 48 species in total
2. Added 3 new reefs and 24 new corals
3. Added 6 new sea sands
4. Added 20 marine tank wallpapers
5. Added 2 achievements for marine fish collection

New marine tank gameplay:
Sell 7-star freshwater adult fish of rare or higher quality to get a new currency - shells. Shells can be used to buy new fish fry and corals and other decorations for saltwater fish tanks.