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Jan 23rd, 2013
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Black spots on bass #10656411 02/28/15 09:24 PM
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JohnButte Offline OP
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A large number of the bass I've been catching lately out of Lake El Butto have had several black spots all over their bodies. Generally about a quarter sized. I don't have any good pics, but they look kind of like the spots on redfish. Any idea what it is and what's causing it? Fish are all healthy and vigorous. Don't recall seeing these spots before this past year. Is it anything to be concerned about? Or more of just an interesting anomaly.

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Re: Black spots on bass [Re: JohnButte] #10656415 02/28/15 09:27 PM
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I brought this up a couple weeks ago-seems a lot of bass get these spots in the winter.

Doesn't mean theres anything wrong with them.

Re: Black spots on bass [Re: JohnButte] #10656427 02/28/15 09:32 PM
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JohnButte Offline OP
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I'm just curious why, as nothing has changed in the environment that I am aware of, been fishing it for ten years.

Re: Black spots on bass [Re: JohnButte] #10656439 02/28/15 09:38 PM
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bo james Offline
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i've caught bass like that on table rock, and from every other lake that i have fished including falcon and fork.

i've often wondered if it was from bass laying in shallow cover for a period of time, and those black areas were from the sunlight. reason that i thought that might be the case was from a bass that we caught and kept in an aquarium, and over a period of time, it lost that black area.

perhaps there will be someone that really knows chime in and explain why this happens.

bo

Re: Black spots on bass [Re: JohnButte] #10656440 02/28/15 09:39 PM
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Pigment discoloration but don't know what it's caused from.


Too blessed to be stressed!!




Re: Black spots on bass [Re: JohnButte] #10656519 02/28/15 10:07 PM
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What is it? The black blotches are referred to as ‘melanosis’ or hyperpigmented melanosis. Darkening is hyperpigmentation and lightening is hypopigmentation. The normal coloration pattern that we observe is the result of genetics and the antagonistic reaction between the melanocyte-stimulating and melanin-concentrating hormones (Rakers et al. 2010).

Personally, I think it is genetically related and is becoming more prominent lately for some unknown reason at this time. Numerous researchers are investigating this and hopefully can give us a definite answer. Majority of the fish I have caught with these spots seem to be very healthy, so I don't think it is a huge concern. We shall see.



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Re: Black spots on bass [Re: JohnButte] #10656561 02/28/15 10:24 PM
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JohnButte Offline OP
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Any speculation as to causes? Dirty water, diet?

Re: Black spots on bass [Re: JohnButte] #10656645 02/28/15 10:56 PM
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Originally Posted By: JohnButte
Any speculation as to causes? Dirty water, diet?


Most of what I have read, researchers speculate that it is stress related due to a number of factors.



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Re: Black spots on bass [Re: JohnButte] #10656652 02/28/15 11:00 PM
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This is nothing new. I've caught bass for many years that had black spots. Have always been told it is genetic, nothing to be concerned about if you want to eat a fish.

Re: Black spots on bass [Re: JohnButte] #10656842 03/01/15 12:08 AM
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Re: Black spots on bass [Re: JohnButte] #10656845 03/01/15 12:09 AM
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Big Sam this year late January... caught several like this out of grass.

Re: Black spots on bass [Re: JohnButte] #10657396 03/01/15 03:11 AM
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A lot of mine have had black spots on their lips too. I have wondered if it was related to rooting in the mud a lot for crawfish. The ones I catch dragging a football jig have been the most likely to have the black lip mark.

Re: Black spots on bass [Re: horseplaydvm] #10657405 03/01/15 03:15 AM
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Originally Posted By: horseplaydvm
Originally Posted By: JohnButte
Any speculation as to causes? Dirty water, diet?


Most of what I have read, researchers speculate that it is stress related due to a number of factors.


Interesting. I can't think of anything that would have my fish stressed other than having to deal with me. Very few people fish el Butto and fewer still have any clue how to catch many of the bass. And even fewer know where the brush piles they like to hang near are located.

Re: Black spots on bass [Re: JohnButte] #10657506 03/01/15 03:56 AM
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still learning
Re: Black spots on bass [Re: JohnButte] #10657674 03/01/15 05:24 AM
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