Wolf fish gender?

Caveden

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How do you tell? I searched but can’t find any info
 

kno4te

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I’d it’s mala sp then shape of anal fin will help determine sex.
 

kno4te

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Believe it’s similar.
 
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Bsixxx

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There is no current work published on sexual dimorphism in hoplis curupira but this is an article on hoplias aimara that may help. As kno4te kno4te stated with the anal fin.
here is the article if youd like to explore.
 
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