Hi Egidio, Hi Egidio, seems to be one of the cromatic forms of Aiptasiogeton hyalinus.

all the best

Pablo

Thank you Pablo, is Aiptasiogeton hyalinus considered a Mediterranean species? It was poorly described in 1825 by Delle Chjaie as Aiptasia hyalina and considered later as synonym of Sagartiogeton laceratus.  Am I wrong?

Best wishes

et

NorthEastern Atlantic and Mediterranean species, also under Aiptasiogeton pellucidus (see Manuel 1981) and Aiptasiogeton comatus (see also Schmidt, 1972). There is a number of cromatic forms and names, the true relationships among they (and then the final specific epithet to be used) is probably an interesting open question awaiting for an additional study. This is not Sagartiogeton laceratus. See also the recent revision of Grajales and Rodriguez, 2011 on Aiptasiidae.

All the best

Pablo

Thank you Pablo

et