new south wales Help Identifying A Fish

[Ace101]

Hi guys not sure if this is the right place to post, me and a mate went fishing on lake Macquarie today and caught ourselves one of these and was just wondering what kind of fish it was, it went hard as a rock when we got it out of the water

 

Please login or register to view this image

 

[rickmarlin62]

common name cowfish..plenty of them and big spiky puffer fish in the lake.. I normally fish out of summerland pt and they are everywhere in bottom half of lake..rick