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Fish Finder Myths Debunked: The truth About how they really work

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in this video I take a deep dive into fish finders and how they work. I start by reviewing basic sonar terminology then dive into some hardware operation and I go through step-by-step on how to interpret a fish finder arch and what it means. During the video I cover 7 common myths and I go into detail on explaining how/why they are not true. What do you think? did I miss any common misconceptions? Let me know what you think.
If you are interested in some further reading I would recommend these books:
ultimate fish finder guide by Martin Jacobs & Jens Biegemeier
Robert J Urick, Urick - Principles of underwater sound-McGraw-Hill
Depthfinders: A Guide to Finding & Catching More Fish Wayne Heinz
Fisheries Acoustics - Theory and Practice, Second Edition (2005)
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Опубликовано:

6 авг 2024

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Комментарии : 12

@Camh1968 11 месяцев назад

Hi. Does the sound wave only detect the air bladder of the fish and no other part of the fish? If yes, why is this so? Cameron

@FishOclock89 11 месяцев назад

For the most part yes. The air bladder consists of about 90% of the return for physoclisti fish like bass, bluegill and crappie. However species of fish like the blue catfish have a skull that can be picked up by sonar so you will you actually see more than one return. Fish like carp and gar have scales that certain higher frequency sonars can detect. I am actually working on another video about this and should be done by the end of the week. I took several species of fish and studied their sonar returns to see differences and patterns.

@Camh1968 11 месяцев назад

@@FishOclock89 thank you for this detailed reply. To follow on from this detail then, wouldn’t a larger fish naturally have a larger bladder and therefore show a larger echo return arch in the plotter screen? I understand that fisherman like to measure the arch return image on the screen to determine if it is worthwhile catching. Cameron

@FishOclock89 11 месяцев назад

I think that as an assumption that many fisherman make that is not correct. The air bladder is only designed to keep the fish stabilized in the water and is only 9% of the total volume of the fish. Fish can pump air into their air bladder and also remove air as needed. Larger fish may not have larger air bladders as the size of the fish does not correlate with the size of the air bladder. However, some species of fish like carp and catfish actually have larger air bladders than bass and can actually gulp air from the surface and store air in their gut which they do when they are in low oxygen content water. Much like how a camel would store water in its hump these fish can store air for later usage. @@Camh1968

@Camh1968 11 месяцев назад

@@FishOclock89 many thanks again. It’s an interesting topic. I mainly fish for snapper. Do you know the characteristics of their air bladders? Do snapper have a large bladder in proportion to their overall size?

@snakebit3159 Год назад

Great video. Very informative!

@FishOclock89 Год назад

Thank you!

@PerryShriver 3 месяца назад

good stuff.👍

@dtrain1476 Год назад

Awesome information! Do you having any videos regarding Sonar Settings on your Fish Finder preferably Garmin? Thanks for sharing!

@FishOclock89 Год назад

Thanks for the comment. I actually just created a video showing the settings I use and how I use them, feel free to take a look at your convenience: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-EzfILLWci80.html