zero
3
no fish don't have legs they have tails and gills.
10 legs (8 regular and 2 claws)
a sturgeon
scissors
According to @GooogleFacts Twitter, it says: "The fish from 'Spongebob Squarepants' that always yells 'My leg!' is named Fred." Source: https://twitter.com/GooogleFacts/status/216626697968173056
silverside
Fish are an obvious animal with no legs but there will be water snails who have a foot but no leg and probably many more creatures too.
how many bones have in your upper leg
There is no standard leg size!
Their legs are long so they can stand in shallow water and eat fish.
In the leg itself (disregarding either end of the leg), one; the knee joint.
It uses it's tail for water movement, not the legs.