FISH CULTURE IS BASICALLY SIMILAR TO AGRICULTURE
You grow green rice crop using soil, water, organic & inorganic fertilizers & sun light. Similarly, by using pond soil & water, organic and inorganic manures and sun light, you can also grow good crop of green microscopic plants in the pond. These are feed for the fish & other fish food organisms.
FISH CULTURE PRIMARILY IS THE CULTURE OF FISH FOOD ORGANISMS FOR FEEDING THE STOCKED FISH
SHADOW DECREASES THE YIELD OF AGRICULTURAL CROP. LIKEWISE IT ALSO DECREASES THE PRODUCTION OF FISH FEED ORGANISMS, ULTIMATELY DECREASING THE FISH YIELD
LIKE OTHER ANIMALS FISH ALSO NEEDS OXYGEN
Livestock animals and human beings respire using atmospheric oxygen
Fish absorbs dissolved oxygen from the pond water
HARMFUL EFFECTS OF UNWANTED FISHES
• PREDATORY FISHES IF REMAIN IN THE POND THEY PREDATE UPON THE STOCKED FINGERLINGS
• WEED FISHES MULTIPLY IN THE POND IN LARGE NUMBERS AND TAKE MAJOR SHARE OF AVAILABLE FOOD THUS LEAVING ASIDE VERY LITTLE FOOD FOR CULTIVATED FISHES
