Submitted by examrobotsa on Thu, 01/01/1970 - 05:30 Assertion (A): All fishes have air- bladder. Reason (R): Air-bladder helps to maintain buoyancy or aids in respiration.Both A and R are true and R is the correct explanation of A Both A and R are true but R is not a correct explanation of AA is true but R is falseA is false but R is true.stats: 0,432,888,664,176,64,416