A scale-less fish is

From a tank containing 10 male fish and 12 female fish, a fish is taken out, then probability that it is a female fish is?

What are not true? a. Dermal scales of fishes form the exoskeleton b. cycloid and ctenoid scales have distinct lines of growth which aid in determining the age of the fish. c. Fish scales are never shed. d. The skin in elasmobranchs is covered with placoid scales. e. The development of a placoid sale is not like the development of a tooth

What are not true? a. Dermal scales of fishes form the exoskeleton b. cycloid and ctenoid scales have distinct lines of growth which aid in determining the age of the fish. c. Fish scales are never shed. d. The skin in elasmobranchs is covered with placoid scales. e. The development of a placoid sale is not like the development of a tooth

Where do scales of fishes and feathers of birds grow from?

The scales of fishes, reptiles and feathers of birds grow from which cells ?

How many million years ago, the jaw-less fishes probably evolved ?

The scale of fish are

Large scale death of fishes occur in

Large scale death of fishes occur in