Hydroid Amphipods - Cayman Islands

Any clues about these small amphipods living on hydroids in the Grand Cayman. Seem common and jump about a lot!

Whole frame

and crop

And are these the same species that live in the centre of the solitary gorgonian hydroid? Or android as Gordon calls them!

Alex

And are these the same species that live in the centre of the solitary gorgonian hydroid? Or android as Gordon calls them!

 

Alex

So I am an Engineer and not a Marine Biologist!

I don't think my photo adds to the search for identification as it was taken with a 60mm on D200 with Woody Diopter.

Gordon

Just comparing the antennae shows you have 2 different species - probably genera - in your picture Alex, and Gordon has something entirely different. Gordon's is probably a true commensal. Members have posted pics of it before but there's nothing in the literature that I could find on it.

Thanks Leslie!

Alex