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Myth or not.:dono I have always been told to cut fish ID off :bashbecause it really don't work "fish ID does not show fish". Now I am told that Humminbird's newer software with "FISH ID ALGORITHMS" are better now and fish ID works better now.
Sonar Tips: How to Use Fish ID to Catch More Fish ยป Sonar Wars
Fact. I've found fish ignore my lures whither I know they are there or not. :bash
Also are all fish arch symbols on sonars really fish or just something in the water column.
More information on using Humminbird FISH ID.
Humminbird Fish ID (By TMike) | General Equipment Discussion | Texas Fishing Forum
and this also.
Fish ID?
The "Fish ID algorithms" are based on the idea that the fish's air bladder is one of the most valid and reliable factors in sonar detection of fish ... Most all fresh water fish have air bladders and we know sonar will not travel thru air ...
It stands to reason that the bigger the air bladder = the bigger the fish ...
The previous Fish ID algorithms specified the smallest icon to be a 1lb bass, the medium icon to be a 2lb bass, and the large icon to be a 3lb bass ...
Echoes outside this criteria were not assigned a fish ID icon ...
Interestingly... The new software versions show a walleye looking fish ID icon ...
I haven't heard yet if the new icons also use new algorithms ...
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Another point is that the "Salt Water" selections of the "Water Type" menu under the Setup tab change the algorithms to instead assign the respective fish ID icon sizes from larger air bladder type fish species ...
Rickie
I've found "fish ID" symbols to be a 50/50 conjecture. I've had the symbols come up on my previously owned 2d units, and caught fish at that exact depth/spot ... and had the fish ID symbols appear on the screen when I was in very shallow water, very clear water, and could see that there was NO FISH present. That was one of the major reasons why I used my 2d units to keep track of depth and spot cover, and ignore the "fish" symbols for the most part. And why I prefer Down Image over 2d :biggrin
One of the reasons I was asking about this is that I notice that the fish symbols don't come up as often on the newer unit as they did on the older units. Is this still the same old technology as the old units or have they came up with better sonar technology. I was hoping that they had finally come up with a fix so that these sonars would not be lying when fish symbol appeared.
I do not know if the algorithms have changed with the new fish icons ...
Rickie
I use the fish ID symbols on my Piranaha Max 220 sonar unit on the bow. When my wife goes I let her sit up front or I turn the unit so she can see the screen. She gets excited when the fish show on screen. Sometimes we catch fish, sometimes we don't. However, seeing the fish symbols keeps her interested in fishing. She can't read my 899.
I can't hear you :confused::confused::confused:Quote:
Originally Posted by rnvinc
Let me explain it this way ...Quote:
Originally Posted by rnvinc
The sound traveling thru water reflects off anything that is of a different density than the water itself ...
*There are "greater density items" = bottom, structure, rocks, gravel, brush, etc ...
*And there are "lesser density items" = air ...
The fish ID algorithms use these "lesser density" echoes to determine if that echo qualifies as a fish air bladder ...
Rickie
Fish ID has a purpose. It keeps Brenda from complaining about no fish.
sounds like my wife. She watches my HDS 9 all the time. When there is structure or fish in the middle of the screen she thinks we are right on top of them. I don't have the heart to tell her were not. She loves to fish. I never have to worry about having someone to fish with. She will stay out there all day until dark. And longer if there biting. And the best thing. She helps clean them. :biggrinQuote:
Originally Posted by Hanr3
Gosh man years ago a lot of the cheaper units you just as well leave it on...the return without the symbol did not mean much more than the symbol. If you really worked at it you could get a little better at determining exactly what you were seeing without the symbol...but by the same token if you are observant and have a little bit of deductive skills you can figure out what your looking at a lot of the time. You have to know turbulence from the motor or trolling motor,turbulent water itself with a lot of suspended matter,etc can all throw a false signal. Knowing your waters and where fish are typically going to be and lots of experience goes a long way. Plus I am not going to fish for hours on end without a bite if I think the return may be a little suspect or I am not pretty confident of what species I am probably looking at. When they first came out had a pretty good mental map of a lot of the waters I fished already from having just fished them.But it made a HUGE difference when I could pull up to some standing timber and see which one of say twenty trees had fish among the limbs,and when I would follow along a creek channel and see fish and how they related to the channel rather than just fishing blind based on experience.On the big rivers catfishing if I was drift fishing and wasn't showing much and then all of a sudden drifted into an area showing fish all in about the same width of depth and over an irregular bottom and maybe some baitfish I knew the rods were fixing to bend. I use to call it sometimes when other people were fishing in the boat.If the fish were biting good and it was just a matter of getting it in front of them you could call the hits with a pretty high percentage. I could look at four different brush piles and tell you which one was the best prospect based on fish symbol returns.
I have a Humminbird 899 and I can tell you this much... I found a brush pile a couple weeks ago on Side Imaging. I rolled up on it and hit it with 2D to get a better look. There were 6 large fish IDs showing up on/in/around the brush. I caught 5 REALLY nice crappie and had a 6th one that got off at the surface. Then the bite just stopped. Rolled across and took another look as I was leaving and there was ONE left on the brush pile. That gives me a pretty good reason to trust it.
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Great post....
Nice job.
I have the same unit. Works great.
I remain skeptical about accuracy of the fish ID. With the chart moving or boat drifting, how can you be certain you are not seeing the same fish more than one time, or conversely if you have multiple fish at the same distance from the transducer you will still get only one showing. If you have ID off a single fish or several will show as "lines of spaghetti" on 2D depending on boat and chart speeds.
On my 987c-SI with split screen showing all three. Side down 2D. All three showed the same fish, Fish ID was on 2D and down and side showed the same fish. I tried to find the screen shot I took. It shows the fish moving up and taking the bait. Me setting the hook and reeling the fish up to the surface. This was a 42 lb Blue catfish. I had marked that fish on the SI laying by a log. It only showed up as a white spot. That was run seeing it on all three. Then catching that fish and seeing it while reeling the fish in. Dead current and fishing straight down under the Transducer in 34ft of water. Have caught a lot of bigger catfish doing this. Today caught a yellow bass. Fishing right under the transducer on the Helix, see a lot of fish in 18ft of water on a crappie bed. Wish I had gotten a screen shot of that one.
Pete
Nice fish and pictures, please share your settings.
Thanks