Male or Female Mandarin?

Discussion in 'Fish and Invertebrates' started by magnetar68, Jan 29, 2017.

  1. magnetar68

    magnetar68 Guest

    Is this a female red mandarin dragonet (Synchiropus splendidus)? She does not have the spike as shown on the male in the bottom photo, right? I am asking because I thought I read somewhere a long time ago that juveniles were hard to sex because the males develop the spike later, but I am not sure.

  2. Kensington Reefer

    Kensington Reefer Supporting Member

    Looks female from here
  3. Ibn

    Ibn Supporting Member

    I concur. Female.
  4. Bruce Spiegelman

    Bruce Spiegelman Supporting Member

    Vote for female here as well. My juvenile red male had the spike while still very small.
  5. yellojello

    yellojello Supporting Member

    Got inspired to maybe add another to pair with my current. My current one I've had over 2 years, and wondering if it is a he or she...

    DSC04408 (Large).JPG

    DSC04411 (Large).JPG
  6. Flagg37

    Flagg37 Officer at large

    It looks like a female to me. I'm looking for that long fin that stands up on top. It could just be laying down though.
  7. Bruce Spiegelman

    Bruce Spiegelman Supporting Member

    It's impossible to tell until you see the top fin open. If it has a flag it's a male.
  8. Bruce Spiegelman

    Bruce Spiegelman Supporting Member

    One thing to keep in mind when you add the second. Your older one may attack the new one for about 24 hours or so and it's going to freak you out because she will actually latch on with her mouth and shake the new one. I was amazed how strong that little mouth is. After a day or so they likely will ignore each other for a week or so and then you'll start seeing them swim side-by-side at dusk as your lights ramp down.
  9. yellojello

    yellojello Supporting Member

    Will try to get a better picture when that fin sticks up. o_O
  10. yellojello

    yellojello Supporting Member

    Ah, I definitely see a spike now. So a male :) Will have to find a female one now. Can a green pair with a red... or they have to be the same?

    Well, if I make a mistake and I do have a female... no issues with two females? I assume they don't change sex like clownfish?
  11. Bruce Spiegelman

    Bruce Spiegelman Supporting Member

    No issue between greens and red. Definite issues between male/male or female/female though. They don't change sex but they are very territorial. However, if you see the spike then you know it's a male simply be sure you get a female. You may have to watch one at the LFS for 10 minutes or so tro be sure, but it's fairly foolproof.

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