Am I doing something wrong? Help

Discussion in 'Livebearers' started by JCgirl, Mar 18, 2010.

  1. JCgirl New Member Member

    I have 11 beautiful blue platy fry. They were born May 23, 2009. They are almost a year old now.. and they are all still about 1/2 the size of an adult! I change the water regularly, every week or every two weeks and I feed them twice a day. I have heard that they grow slowly, but I thought by a year, I would have at least been able to tell their gender, but they are still too small for that.
    So what am I doing wrong?

  2. Butterfly Moderator Moderator Member

    Welcome to FishLore!
    Sorry for the questions but they will help us answer your question :)
    What else is in the tank with them? what are the water test parameters(ammonia, nitrite, nitrate)

  3. JCgirl New Member Member

    Thank you. :)
    I have Neon Tetras and some Oto algae-eaters.

    Just checked them:
    A: 0
    Ni: 0
    Na: Between 0 - 5, but closer to 0

  4. bubblefish Valued Member Member

    Mine seem to grow much quicker than that. Mine got to half an inch in about 4-5 months and close to adult size at around 7-8 month.

    How long did you keep the fry seperated from the other fish? Also, what have you been feeding them?

  5. JCgirl New Member Member

    I had them in a breeder tank until they got big enough that I felt they would be safe with the adults. (I don't have a second tank to keep them in.. I only have one). When I put the first two biggest ones in with the adult fish, they chased them for about a minute, then everything was fine. They got along great. So once the other babies got to be about that same size, I put them in with the adults. Now they're all together and seem happy.

    I fed them baby bites for the first several months, but now I have switched to Tetra Color flakes.
  6. bubblefish Valued Member Member

    Are they able to compete with the others for food?
  7. JCgirl New Member Member

    No, not at all. They are all eating fine.
  8. bubblefish Valued Member Member

    Hmm... I don't know what it could be then. I feed mine a pretty varied diet which included egg yolk and first bites fry food when they were really little and then later on, I fed crushed flakes, micro work, cut up blood worms, baby brine shrimp. I just really tried to mix it up. I don't know if this contributed to their growth or not.

    I guess if they are healthy, that's what is important.
  9. crazedACD Valued Member Member

    How long were they in the breeder box for? Possibly they got stunted by being in a small space?
  10. JCgirl New Member Member

    Um, about 2 or 3 months cuz I wasn't sure. After I put them in with the adults, they grew a lot more but now they are really really growing slowly.. so slow that I can't tell they are growing at all.
  11. JCgirl New Member Member

    I'm still pretty concerned about my little ones. If anyone has any suggestions of what I could do to encourage growth, I would very much appreciate it! :-\
    Last edited: Apr 16, 2010
  12. JCgirl New Member Member

  13. Butterfly Moderator Moderator Member

    They may have been stunted from being in the breeder box for so long. As long as they are eating and seem happy and healthy that;s all you can hope for. If they are going to grow more making sure the water stays as clean as possible will help.
  14. jetajockey Fishlore VIP Member

    I would try baby brine shrimp, its supposed to help with growth in fry but if they are a year old I don't know if that can be changed.
  15. JCgirl New Member Member

    Just an update... the babies will a year old in a few days, but they have finally reached maturity! I can now definitely tell their gender now. I noticed this for sure about two days ago. They are still very small, but they do seem to be getting darker in color and growing just a tiny bit. I guess they do just take a LONG LONG time to grow.
  16. Nick G Well Known Member Member

    Hi JCgirl. When Livebearers are kept together and allowed to breed, the older fish release a hormone (possibly in their urine), which slows the growth of the younger fish, this is to slow the competition for breeding rites. When raising the fry, I find that doing waterchanges every 2 days increases growth rate by about double, as it dilutes the hormone.