ID please (Serpent/Sand Eel)

[Bloggsy]

Hi again can I please have an identification on the attached. These were being spat out by Flathead being caught off Bermagui this morning about 150 mm long

Edited March 3 by Bloggsy
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[Blackfish]

Maybe a Serpent Eel, hard to positively ID because of it decomposition. 

[Yowie]

Same for flatties caught off Sydney. The little eels are half decomposed by the time they are spat out, so a bit hard to I.D.

[noelm]

We used to just call them “Sand Eels” there must be lots of them though, because at times, every Flathead is full of them.

[XD351]

Could they be the elvers of the eastern short or longfin eel making their way back from the spawning grounds in the coral sea ?  

[frankS]

Don't know their proper name but they bury themselves vertically in the sand and pop up now and again . emerge about half their body out of their hole and reverse back down into their hole. I used to watch them from my boat while moored in Bermagui Harbour . My mooring was two spots down from the slipway where they work on  the boats. If you want to see these eels doing their thing there is a road that you can stop at and watch them behins the slipway.

Frank