India, July 21 -- Just imagine, had the Tricity turned three times as smoggy as New Delhi on a gloomy winter day, how difficult would it be for citizens to navigate their "familiar" streets. So now, since we have created the imagination of a surreal predicament, we turn to fishes actually confronted with pollution turning their waters turbid. Fish use vision to navigate but may find this challenging when water becomes so murky. Turbid water bodies are common in human-dominated habitats affecting aquatic life adversely unless organisms find ways to cope with it, including a resort to behavioural change.

A research project to determine the effect of turbidity on a common species, Zebrafish, was conducted by the Department of Biology, Indian ...