This is basically already in the snapshots, or soon will be if it's still not implemented. We are getting fish mobs that spawn and swim around in the water, and you can scoop them up in buckets. You can then place the fish back in the water, specifically in a specially prepared enclosure (ie, fish tank).
Crafting Recipe
What it does
This is basically already in the snapshots, or soon will be if it's still not implemented. We are getting fish mobs that spawn and swim around in the water, and you can scoop them up in buckets. You can then place the fish back in the water, specifically in a specially prepared enclosure (ie, fish tank).