1. Hello guest! Are you an Apistogramma enthusiast? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Apisto enthusiasts to meet online. Once you join you'll be able to post messages, upload pictures of your fish and tanks and have a great time with other Apisto enthusiasts. Sign up today!

how to sex young fish from regani complex

Discussion in 'Apistogramma' started by Matthias.couckuyt, Apr 15, 2019.

  1. Matthias.couckuyt

    Matthias.couckuyt New Member

    Joined:
    Mar 11, 2019
    Messages:
    9
    Likes Received:
    1
    Trophy Points:
    3
    Hi,

    I recently saw a nice picture on how to sex juvenile fish from the nijsseni complex (from mike wise)
    Does this exist for regani complex?

    I have a lot of 2 month old Ortegai juveniles and was wondering on when I would be able to determine their gender.

    Kind regards,
    Matthias
  2. Mike Wise

    Mike Wise Moderator Staff Member 5 Year Member

    Joined:
    Mar 16, 2004
    Messages:
    9,707
    Likes Received:
    1,282
    Trophy Points:
    113
    Not that I know about. If they show no differences then they are too young. Behavior might be an indicator, but not always.
    Matthias.couckuyt likes this.
  3. Matthias.couckuyt

    Matthias.couckuyt New Member

    Joined:
    Mar 11, 2019
    Messages:
    9
    Likes Received:
    1
    Trophy Points:
    3
    Hi Mike,

    Thanks for your reply!

    They indeed show differences.
    I can see that most of the fish have a thick black border in their pelvic fins, a lot more than even my adult males have. So i'm quite sure these are females.
    They also show more black in the first 3 spines of their dorsal fin.
    Also less spaces in the blacks on the bottom of their dorsal fin.

    I think I have around 3 males and 7 females but they are only 2 cm so I will wait a little bit longer to be sure.
    Sorry that not all pics are as sharp as they should be :)

    1. Females
    1.jpg
    2. Female 2.jpg
    3. Female and male below 3.jpg
    4. Female 4.jpg
    5. male 6.jpg
    7. male 7.jpg
    8. females 8.jpg
    9. female 9.jpg
    10. male 10.jpg
    11. female 11.jpg
    12. female 12.jpg 13.jpg
    13. female 14.jpg

    Attached Files:

    • 15.jpg
      15.jpg
      File size:
      1.9 MB
      Views:
      13
    • 16.jpg
      16.jpg
      File size:
      2 MB
      Views:
      14
  4. mrjbacon

    mrjbacon Member

    Joined:
    Sep 3, 2017
    Messages:
    49
    Likes Received:
    6
    Trophy Points:
    8
    I can't say for certain but I'm pretty sure the ones with black on the pelvic fins are all females. It's possible you have one or two males mixed in with them, but like Mike said, it's difficult at this point. The other ones look like definite males. If you can separate them, try putting all the juvies with black pelvic fins in their own tank and see if any males start expressing in the following weeks.
  5. Matthias.couckuyt

    Matthias.couckuyt New Member

    Joined:
    Mar 11, 2019
    Messages:
    9
    Likes Received:
    1
    Trophy Points:
    3
    I agree mrjbacon.
    And thanks for the good tip!