Filamentous rhodophyte with roughly square or rectangular cells loosely aligned in branching mucilaginous tubes. The cells are usually blue-green in colour. On close inspection the star-shaped blue-green chloroplast can be seen, with a large pyrenoid in the centre.
Chroodactylon, lower Clutha River, X10. Photo: Otago Regional Council & Manaaki WhenuaChroodactylon, lower Clutha River, X320. Photo: Otago Regional Council & Manaaki Whenua
Typical habitats
Our records are mostly from good quality streams and rivers
![[Chroodactylon], lower Clutha River, X10. Photo: Otago Regional Council & Manaaki Whenua Image](/assets/Tools-And-Resources/Identification/algae/chroodactylon10__ScaleWidthWzEwMjRd.jpg)
![[Chroodactylon], lower Clutha River, X320. Photo: Otago Regional Council & Manaaki Whenua Image](/assets/Tools-And-Resources/Identification/algae/chroodactylon320__ScaleWidthWzEwMjRd.jpg)