This can damage fish gills and cause fish sick, just like fish cramming the surface to grasp for air when the water has low dissolved oxygen (DO).
It has been demonstrated though that mollies in all habitat types experience predation by a giant water bug of the genus Belostoma [ 79, 80, 130], and a recent prey choice experiment under semi-natural conditions found that water bugs are more likely to capture dispersers, i.e., cave fish at the surface and surface fish inside the cave [ 57].
We propose that the divergent evolution of colour patterns in cave fish presents a candidate trait that provides cave fish in the surface habitats with a disadvantage, for example, in intersexual selection.
You may need to find different combinations of food or feeding times if the fish at the surface eat all the food intended for the fish at the bottom.
But if you suddenly find yourself catching a great many fish, you should flee: the kraken might be beneath you, scaring the fish towards the surface.
Members of this group are generally considered to be primarily fish eaters and excellent fliers, catching their food on the wing by snatching fish from the surface of the water.
We watch through his eyes as an osprey swoops and dives for a fish: a "powerful plunge, a momentary pause, then broad, fingered wings lift bird and fish from the surface and away with a shake".
Little splashes emerged from the blackness as unseen fish broke the surface.
A boy was trying to convince his sister he'd just seen a fish below the surface.
When I'm awake I fish on the surface of the water, with dry flies bass poppers, and underneath it, with streamers and nymphs.
