how we know fish soak with Formaldehyde or nt?

  • Thread starter Thread starter Inspire
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Inspire

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Halo,i would like to know how do we can know whether a fish is soaked with Formaldehyde/formalin or not?how can we differentiate it?for example no flies around...i also would like to know what is the ay to prevent flies around the fish?Thank you
 
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