Which fish has no skeleton at all? #shorts

Which has no skeleton ?

Which fish has an electric organ?

A skeleton equation has

Axial Skeleton

Give the answer of following questions by observatios from given figures: (i). Which fish has air bladder? (ii) which fish is known as saw fish? (iii) which fish is cartilaginous fish? (iv). Which animal is ectoparasite on true fishes? (v) Which fish has paired fins? (vi) which fishh has body skeleton? (vii) Which fish has 4-pairs of gills? (viii) Whch fis has operculum? (ix) Which fishes are viviparous? (x) Which fish lives in fresh water?

Which two struures the skeleton ?

In echinoderms skeleton is

In echinoderms skeleton is