1 Oscillatoria sp.
2 Anabaena constricta.
3 Oedogonium.
Very good, I upload this picture.
Are the correct names?
Regards, Francisco.
(https://www.mikroskopie-forum.de/pictures004/152270_11533895.jpg) (http://s1373.photobucket.com/user/catetocateto/media/DSCN3814_zps9ea2d2ca.jpg.html)