Sex my firemouths

  • We are currently upgrading MFK. thanks! -neo
It depends how good you are at recognising the features, combined.... yes you get females with more color... yes you get females with long extentions... but the lead features are the body shapes.. Males always have heavier heads as they mature and larger mouths. I'm not saying its a foregone conclusion cause you do get stunted specimens or substandard Firemouths, but based on quality FMs my defination of the sexes is accurate.

For me I find venting works best. I tried for a pair for months and keep ending up with males. Then I started venting and got a pair.

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The first one looks like a male and the other 2 look female. Makes have noticeably longer dorsal find

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not really sure, but they all look like male to me :)
from previous experience, female have a little rounder dorsal fin compared to males :) though I'm not 100% sure
 
For me I find venting works best. I tried for a pair for months and keep ending up with males. Then I started venting and got a pair.

Venting obviously shows the difference but the point is the fish are already on the brink of spawning anyway, by that point... We're trying to illustrate the differences pre-spawning not after ;)
 
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