This study reflects the current state of the
fish fauna from the lower basin of river Bârlad,
within the research started in 2003 in the
hydrographic basin of this river regarding the
inventorying of the species of fish from these
waters. The lower basin and particularly the main
course of river Bârlad have been seriously affected
by water pollution, which led even to the extinction
of the fish communities across the entire main
course of the river, downstream of the city of
Bârlad.
This paper highlights the extent to which
these fish communities have recovered, the data
obtained being compared to that from 2003 and
from the literature in order to identify the changes
suffered by the structure of the fish communities.
To this effect, investigations have been conducted
in terms of species composition, the structure of
fish assemblages, as well as the index of biological
integrity (IBI) which best reflects the present
condition of the fish stocks in these ecosystems. | 
