Water quality refers to the chemical, physical, biological, and radiological characteristics of water. It is a measure
of the condition of water relative to the requirements of
one or more biotic species and or to any human need or
stocking- is the practice of raising fish in a hatchery and releasing them into a river, lake, or the ocean to supplement existing populations, or to create a population where none exists.
Stocking- density is the quantity of fry or fingerlings per unit of water area.
(i)Fertilization of the pond/addition of manure.
(ii)Maintaining water level.
(iii)Repair of pond and the fence.
(iv)Cropping /selective removal of excess fish.
(i)Anorexia (loss of appetite, refusing all food, with consequential wasting)
(iv)Resting on the bottom
Area= length x breadth
Area= 30 x 20
Area = 600m²