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I saw this pic while crawling online and it was a bit different for me to predict which worm is this.

enter image description here

Source: http://www.seafishingtackle4u.com/softbaits/ragworms-latex-lures/

It appears somewhat different form other annelids as parapodia or setae are somewhat transparent and very attractive too.

What worm is this?

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    $\begingroup$ That worm is plastic. $\endgroup$
    – J. Musser
    Commented Aug 4, 2014 at 22:18
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    $\begingroup$ So, in summary, it is Nereis effigiei $\endgroup$
    – Alan Boyd
    Commented Aug 5, 2014 at 15:28
  • $\begingroup$ @J.Musser i too think the same as i cant see any correct parapodia on its body $\endgroup$
    – agha rehan abbas
    Commented Aug 5, 2014 at 16:16

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If you would have read the text from the source of that image (which by the way you didn't mention, I did a Google Image search and edited your question to include it), you would have known that what is seen in the picture is not a living thing, it is a latex fishing lure:

Product Description: Sandworm/Ragworm 8″ size, sure fire fish catching lures. Costing less than live worms, but lasting much longer, never be without worms again.

Source: http://www.seafishingtackle4u.com/softbaits/ragworms-latex-lures/

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    $\begingroup$ Rotf lol Awesome answer $\endgroup$
    – user1357
    Commented Aug 5, 2014 at 5:19
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As Cornelius correctly pointed out, it's not a living worm :)

As to the question, what kind of worm they tried to imitate, I'd say, they had a nereid (errant, i.e. wandering) in mind and were likely inspired by the segmentation of Arenicola (sedentary), which together created this appearance, unrealistic for an errant polychaete: with the body segments outnumbering parapodia.

EDIT:

They also paid no attention to the head (a very important body part in polychaete systematics!), which seems to be absent. This feature could also be "inherited" from Arenicola, the head end of which is not prominent and bears no appendages.

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  • $\begingroup$ what is the appandage like thing arising from mid part of its body $\endgroup$
    – agha rehan abbas
    Commented Aug 5, 2014 at 16:19
  • $\begingroup$ @agharehanabbas: hmm, you mean the hook? $\endgroup$
    – alephreish
    Commented Aug 5, 2014 at 21:25
  • $\begingroup$ yes can i get any details about its morphology anatomy and role in daily physiology?, i think it is special character of polycheate nerieds $\endgroup$
    – agha rehan abbas
    Commented Aug 6, 2014 at 0:46
  • $\begingroup$ The hook is actually part of the lure. $\endgroup$
    – alephreish
    Commented Aug 6, 2014 at 12:04

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