Anbu and raju have been growing fish fries in their nursery pond for more than two weeks. They have to shift the fish fries to another pond after that. Can you say why? Please give me the right answer. Don't give guess answers.
Answers
Answered by
1
For the two weeks the fish develop and become bigger into fries. The fries feed on various small organisms called Plankton in the nursery water pond.
When they grow further they need different food, larger invertebrates or special food made for them.
So in fish culture there are different ponds. One till fish grow to the size of fries and then another pond for them to grow further into fingerlings and parr etc. The first pond has gravel for hiding place very small fish that is from the stage of eggs to the stage of fries. There they feed on their yolk and come out as fries.
Perhaps the temperature, water density, oxygen content are controlled in a slightly different way in the two ponds, as suitable to their size. Perhaps in the second pond there are fishes of different varieties mixed.
When they grow further they need different food, larger invertebrates or special food made for them.
So in fish culture there are different ponds. One till fish grow to the size of fries and then another pond for them to grow further into fingerlings and parr etc. The first pond has gravel for hiding place very small fish that is from the stage of eggs to the stage of fries. There they feed on their yolk and come out as fries.
Perhaps the temperature, water density, oxygen content are controlled in a slightly different way in the two ponds, as suitable to their size. Perhaps in the second pond there are fishes of different varieties mixed.
kvnmurty:
:-)
thank you
Answered by
0
Less plankton
pond size is small
Less oxygen available
pond size is small
Less oxygen available
Similar questions