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Fathead Minnow: Which picture is a female?


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#1 JackieFisher

JackieFisher
  • NANFA Guest
  • Delaware

Posted 15 May 2019 - 05:35 PM

Hi Guys,

I have been trying to breed fatheads just to observe them, to no avail. I used to assume two fish are females, but I'm no longer sure. The thing is they look similar unless they become in heat. Could you help me identify them?

 

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#2 JackieFisher

JackieFisher
  • NANFA Guest
  • Delaware

Posted 20 May 2019 - 05:00 PM

I am aware that the males will have black head and color bands, but that is only during breeding, for males that are breeding. Underdevelped males are similair to females



#3 JackieFisher

JackieFisher
  • NANFA Guest
  • Delaware

Posted 09 June 2019 - 03:14 PM

Please help

#4 JackieFisher

JackieFisher
  • NANFA Guest
  • Delaware

Posted 09 June 2019 - 03:15 PM

It is been months little progress

#5 JackieFisher

JackieFisher
  • NANFA Guest
  • Delaware

Posted 09 June 2019 - 03:15 PM

News
Right now at least one male has developed breeding tubercles and dark pattern, but it is unstable and goes away occasionally.
I am not sure those females are actually males instead.
They are kind also territorial . One female would fight for caves.
every fish including obvious males have a little ovipositor like protrusion don under.
Not sure if i should persist.

#6 Fleendar the Magnificent

Fleendar the Magnificent
  • NANFA Member
  • Ohio

Posted 10 June 2019 - 01:02 PM

Wish I could help you with your conundrum. Unfortunately, they do not get colorful like most darters do. IMHO, the tubercles are a good giveaway as to the males. I have 6 spotfin shiners in my tank and would like to know which are which, but unless they develop tubercles, I'll probably never know.






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