Showing posts with label Caudal Keel. Show all posts
Showing posts with label Caudal Keel. Show all posts

Friday, October 03, 2008

Mystery Shark!!!



Check out this Shark by clicking on the pics.

It was brought up and photographed when jigging for Pakapaka, a prized deepwater Snapper (likely Etelis coruscans) on a seamount in 1,000m of water off the island of Kadavu in Fiji.

My knee-jerk reaction when hearing the story was "Silky!" (C. falciformis) - but upon seeing the picture, the first dorsal seems just a bit high for it to be that species.
Never having personally seen a Bronzie (C. brachyurus) but having heard about numerous, albeit always unconfirmed "sightings" in Fiji, I was hoping that this could be the first confirmed record of that species for that country.

And yet - that caudal keel continues to irritate me!
The only Carcharhinid Shark with a pronounced caudal keel I've seen is the Tiger, clearly not the Shark in question.
So, quite frankly, I don't have the faintest clue!

Having contacted the "experts", the only educated guess so far is Bignose Shark (C. altimus), this yet again with a question mark. To me, the alignment of the free rear of the pec with the first dorsal look wrong - but who am I to say...

Anybody out there who knows?