Phylum: Miozoa Family: Ceratiaceae
Ceratium hirundinella (O.F. Müller) Dujardin
Widespread but not particularly common. Fairly adaptable to nutrient levels in deeper water of lochs
References:
John, D.M., Whitton, B.A. & Brook, A.J. (2011 second edition) The Freshwater Algal Flora of the British Isles