Which of the following fish has a terminal mouth and four pairs of gills covered by an operculum on each side?
Which of the following fish has a terminal mouth and four pairs of gills covered by an operculum on each side?
Flying fish (Exocoetus)
Sea horse (Hippocampus)
Rohu (Labeo)
Catla (Katla)
Solution
Flying fish, also known as Exocoetus, possess all the characteristics mentioned in the description: a streamlined body, terminal mouth, four pairs of gills covered by an operculum on each side, etc.