Thursday 31 December 2015

The pretty Fish

"I see you, can you see me?

The lake varies from shallow at the lake bank to about 1.2m at deepest, but the bank is the favourite place for these fish during the hot day. Why?

Tests done on water samples on a pond showed that dissolved oxygen content varied from highest at the surface to almost nil at 600mm below the water surface. That is why the fish likes to rest like that because the lake bank is less than 300mm depth and there is plenty of oxygen to breathe.



No comments:

Post a Comment