Figure 1From: Changes of bacterioplankton apparent species richness in two ornamental fish aquaria Temporal changes in (a) dissolved oxygen, (b) pH, (c) phosphate, (d) nitrate, (e) ammonia/DIN and (f) bacterial abundance (cells × 10 5 ml -1 ) in the water column of the rearing tanks of Archocentrus nigrofasciatus and Pterophyllum scalare. DIN: dissolved inorganic nitrogen, i.e. total concentrations of nitrate, nitrite and ammonia.Back to article page