Which special features help fishes to sense their environment?

animal-kingdom
cbse

#1

Fishes have following sense organs to sense their external environment.
(i) Ear is formed of only one internal ear having three semi-circular canals.
(ii) Olfactory sacs (nasal chambers) do not open in buccal cavity as internal nares are absent.
(iii) Lateral line sensory system is present to note the changes in surrounding water.