Sonar interpretation question

[chris.brock]

 

I've seen this on many lakes, anytime of the year, ice fishing too.

 

I was trolling a flat last weekend, back and forth, watching the graph.

 

As soon as the sun is down, the screen lights up like this. 8:43 is actually 9:43

 

 

I'm guessing they're benthic invertebrates rising off bottom? Has anybody else seen this? what kind of bugs are they?

[porkpie]

I often see that with may/shad fly hatches. Couldn't say with any certainty though. Your mileage may vary.

Edited July 22, 2016 by porkpie

[John Bacon]

I've seen this on many lakes, anytime of the year, ice fishing too.

 

I was trolling a flat last weekend, back and forth, watching the graph.

 

As soon as the sun is down, the screen lights up like this. 8:43 is actually 9:43

 

 

I'm guessing they're benthic invertebrates rising off bottom? Has anybody else seen this? what kind of bugs are they?

 

I think that you're right about it being benthic invertebrates; and perhaps some fish feeding on them too. I wouldn't know what kind of bug they are; that may depend on the season, depth, and waterbody.

[kickingfrog]

There is a doctor sonar site that does a lot of interpretation, but I agree with those above, the freaks come out at night.

[Freshtrax]

I've seen similar screens never knew what to make of it.

[Joeytier]

Looks like a rabid pack of 4-6 pound walleyes...why couldn't you catch any??

[Terry]

looks like the gull lake ghosts rising from the bottom

[BillM]

Atlantics.

[Thrilla]

We see that in heavy mayfly hatches on Erie

[netminder]

Looks like a rabid pack of 4-6 pound walleyes...why couldn't you catch any??

[fishindevil]

Yes I have seen that too Chris on the shield lakes I fish especially over mud flat bottoms it's the bottom comming alive as well as bait mixed in feeding on them you can fine tune it as well but remember if you see bait feeding the big fish are usually not too far away .......drag a tube or dropshot that for sure .....