two layers of gills on each side
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A fish has nine layers of gills and the gills are also jagged ! But......do u all know why ???
Tiger sharks have they have 5 gills
Depends what type of fish.
There are two gills located on each side of a perch. The Opercula is the covering that protect the gills.
depends on how big the fish is
How many times a fish moves its gills in 1 minute depends on the species of fish and its size. Some species move their gills between 125 and 135 times a minute. Smaller fish move their gills more often than larger ones.
A squid has a total of 4 gills, 2 on each side.
Killer whales are mammals and have two internal lungs. They are not fish, and therefore have no gills.
Fish breathe with gills. By the way, whales do not. They breathe air, because they are mammals.
Ahh.....yeah pretty much they do have gills.
Clams have a couple sets of gills. They have one on each side of their feet and two in their shell linings.