FISH image of full-scale activation sludge. "Candidatus Amarolinea" is red while all other cells appear blue. Bar, 20 µm. - Source:2Aerobic heterotroph
Novel phylotype belong to novel family Amarolineaceae. The phylotype is capable of aerobic respiration, fermentation, and dissimilartory nitrate reduction to ammonia 1. The cells are rectangular without visible septa, a trichrome thickness of 1.0 - 2.2 µm, and a length in the 20 - 140 µm range. They are non-motile, Gram stain negative 2. The phylotype has been observed in high abundance in activate sludge with bulking problem .
CFX64 covers the majortiy of the genus 2.
 Andersen, McIlroy, Nierychlo, Nielsen, Albertsen (2019): Genomic insights into Candidatus Amarolinea aalborgensis gen. nov., sp. nov., associated with settleability problems in wastewater treatment plants. Syst. Appl. Microbiol. 42 (1): 77-84. doi:10.1016/j.syapm.2018.08.001
 Nierychlo, Milobedzka, Petriglieri, McIlroy, Nielsen, McIlroy, et al. (2019): The morphology and metabolic potential of the Chloroflexi in full-scale activated sludge wastewater treatment plants. FEMS Microbiol. Ecol. 95 (2): . doi:10.1093/femsec/fiy228