Fig. 1.

Phylogenetic tree constructed using neighbour joining method, illustrating the genetic position of the isolates from different aquatic species, based on the partial 16S rRNA gene sequences. Genbank accession numbers for the sequences retrieved from the database are shown in parenthesis. The NTM species identified in this study are also shown in parenthesis next to the isolate identity. The percentage of replicate trees (> 50%) in which the associated taxa clustered together in the bootstrap test (1000 replicates) are shown next to the branches (Felsenstein, 1985). Nocardia farcinica was used as an out- group sequence. Bar 0.01 substitution per nucleotide