How to identify Rhizophagus irregularis by eye or microscope

[Pondwater]

See somuch hyphae in my soils and composts how do you know which is irregularis ? For those who collect am fungi are you blindly adding fungi ? Or is Ri dominant? How do you know you have that species dominant and not another without buying select species in bag form and hope they are living ?
how to identify Rhizophagus irregularis by eye or microscope ,google revealed nothing I can translate