Kōhaku: The Big Pond

From BoardGameGeek:

The Big Pond Expansion for Kohaku introduces new fish and decorative features for your koi pond that can be used alongside those in the base game. Additionally this expansion contains an entirely new way to play Kohaku. Rather than each player building their own pond, you will place your tiles into a shared tile tableau. Featuring a new drafting system and additional ways to score, there's tons of fresh strategy to explore. -description from the publisher