The online community of knife collectors, A Knife Family Forged in Steel
Picked up two purpose made Fish Cleavers. On is made by Ka-Bar, the other by Robeson. I'm not sure if anyone is still making these but they really seemed to be a perfect size for cutting bait fish or clipping the head and tails off of fish you're cleaning.
I plan on putting them to use in the near future. I'm sure any small cleaver would do just as good but as these have a scaler added, they just seemed a perfect addition to the collection and the tackle box. The Robeson is really an interesting take with its center mounted handle. Both approximately 10 inches overall with a 5 inch cutting edge. The Robeson is seems slightly lighter but that may be bacause of the center mounted handle giving the blade a better balance.
Although the Robeson looks a little funny to me, I think it is going to work well. I like that it has room too not bust knuckles on smaller fish
From what I am seeing online, seems the KaBar is a pretty unique design, most I see are center handles.
and then there is this (?)