Tamable using fish baskets from aberration. They attack the baskets once placed. It is a good strategy to pen then in with fence foundations and walls, or kite them to a pen. Place your basket on the other side of the wall and catch.

I wish WildCard will make them tameable like it says in their dossier because they look pretty cool

They are now tame able with a fish trap.

With the new fish baskets in abberation you can now tame these and use them as gards. You can also tame Coels but what are they going to do nibble you toes.