How to Fish: Using a Throat Pump for Tackle Selection | GoFishBC
Okay, so we’ve just landed a nice fish
that’s definitely big enough to pump. Fish need to be more than about 12
inches in length to do a proper throat pump to find out what food sources they’re
feeding on. So I got my fish in the net here and I’m gonna keep him in the water.
He’s happy. The whole throat pump process is done with the fish in the water.
I got my pump here. I’m gonna fill it with water and then squirt all the water
out so that’s wet on the inside of the tube and inside of the bowl but I’ve got
no water in the tube. Then I’m gonna depress it fully. I know I’m gonna take
my fish and calm him down. I’m gonna turn them upside down and that calms
them down. Still in the water. I’m just gonna take the tube into the narrowing
of the oesophagus and when I release the bulb it forms a
vacuum seal. So I just went in until I felt the muscles of the oesophagus tighten up
and I backed the tube out. And that’s all. And then I’ve got my sample now in the
tube. I got our fish; I’m just gonna hold him until he’s ready to go. He’s gone.
So the I didn’t jam or ram the tube down the throat. I gently slid it in
’till I just feel the narrowing of the muscles in the throat grab on and formed
that vacuum seal. So now I put some water in my vial and then I just squirt what was in his throat. He’s got a few things in there. I’m
just gonna put a lid on there. He’s got live damselfly nymphs and a shrimp and two chironomid larvae in there. Now I know that they’re eating shrimp,
they’re reading damselfly nymphs, and they’ve got chironomid larvae in them.
That’s not a big throat sample but for this time of year
it’s a good sign that at least they’re starting to feed because it is very
early in the fall season. Everything in there is fresh. They’re in the
throat and they’ve still got all their natural color and they’re not discolored.
if I’d gone deeper into the stomach they’d all be well dead and it’d all be
bleached out with the colors. So that’s the advantage of using the throat pump. You’re not going to catch or suck up big dragonfly nymphs or huge leeches but
chironomid, larvae, pupae, mayfly nymphs, damselfly nymphs, shrimp or scuds, zooplankton – are all great food sources that you can sample live with a throat pump
and the fish gets to live another day. So, perfect.