Select object from list where value is elsewhere in the JSON

Let's say I have a bit of JSON that looks like this

{"fish": [        {"name": "pike","version": 1        },        {"name": "haddock","version": 2        }    ],"current_fish_version": 2}

And I wanted to get the name of the fish with the version equal to current_fish_version.

How would I go about doing that?