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Shark ID- Spinner or Blacktip?

Started by Guest_FishyJackson_* , Mar 12 2014 08:42 AM

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12 replies to this topic

#1 Guest_FishyJackson_*

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Posted 12 March 2014 - 08:42 AM

Caught in Sarasota, Florida. We caught 20+ small Blacktip Sharks off the beach, then I caught this bigger shark that had far more pronounced Blacktips on it's fins. Similarly sized Blacktips I've caught had very faint Black tips. I realized after we released it that the best way to tell the difference is that Spinner's have a black tip on the Anal fin, and unfortunately my hand is covering the Anal fin in every picture. Can you experts identify this Shark using another method?

IMG_12961.JPG 119.06KB 5 downloads

IMG_12951.JPG 138.05KB 2 downloads

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#2 Guest_Subrosa_*

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Posted 12 March 2014 - 09:31 AM

Dorsal looks to be set back too far to be a Blacktip, and the anal has a black tip. Spinner.

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#3 Guest_FishyJackson_*

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Posted 12 March 2014 - 09:58 AM

thanks for reply subrosa...I thought my hand was covering the anal fin tho, no? Isnt that exposed fin at the bottom the pelvic fin?

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#4 Guest_Subrosa_*

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Posted 13 March 2014 - 10:27 AM

You are correct sir, I shouldn't post while in that condition!

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#5 Guest_FishyJackson_*

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Posted 13 March 2014 - 10:31 AM

You are correct sir, I shouldn't post while in that condition!

no worries Subrosa! I was literally just about to post another pic I found of this Shark, posting it now

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#6 Guest_FishyJackson_*

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Posted 13 March 2014 - 10:34 AM

It turns out I have another pic of this Shark that shows the Anal fin. It doesnt appear to have the Black tip, so I guess this is jsut another Blacktip Shark?

If so, I dont understand why the black on the fins is so much more pronounced than the other 20+ Blacktips we caught. I thought I read that Blacktip Sharks fins' actually fade more as they get bigger.

Here's the other pic

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#7 Guest_FishyJackson_*

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Posted 13 March 2014 - 08:51 PM

also was hoping for an official ID on this Sting Ray we caught in the same spot, thanks in advance if anyone can tell

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#8 Guest_fritz_*

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Posted 14 March 2014 - 08:46 AM

appears to be a southern stingray

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#9 Guest_FishyJackson_*

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Posted 14 March 2014 - 12:36 PM

Southern Stingray it is...thanks Fritz. For the record, do you think that Shark is officially a Blacktip?

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#10 Guest_fritz_*

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Posted 15 March 2014 - 02:39 PM

I think it's a blacktip but I forwarded the photo to the shark expert at NC Div Marine Fisheries but have not heard back from him yet

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#11 Guest_FishyJackson_*

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Posted 16 March 2014 - 07:15 PM

Thanks for sending to the expert Fritz, you're right probaby just a blacktip but maybe the NC Shark Wizard will see it as a Spinner

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#12 Guest_fritz_*

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Posted 18 March 2014 - 12:56 PM

_{from my expert:}I’m leaning towards blacktip based on the following: dorsal fin size and origin (second photo looks as if the origin is slightly over or behind pectoral insertion – free rear tip of pectorals), and the tips appear more diffuse than a spinner. Spinner has a smaller dorsal fin originating over or just behind free rear tips of pectoral, and lower caudal black tip would be more crisp and abrupt. The anal fin is almost enough to see no black tip origin, but difficult