could help filament.
Merry Christmas, Francisco.
(https://www.mikroskopie-forum.de/pictures004/162365_8468796.jpg) (http://s1373.photobucket.com/user/catetocateto/media/AphanizomenonovalisporumoanabaenaovalisporumesunBasioacutenimo2_zpsfc347ae6.jpg.html)
Lieber Francisco,
mögicherweise ist das eine Blaualge, Nostoc sp. oder Anabaena sp.
Herzliche Grüße
Regi
Regi thank you very much for your answer.
Wear time studying this photo.
I think I might Aphanizomenon ovalisporum or Basionym anabaena ovalisporum.
Thanks and best regards, Francisco.