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Growth rates in fry of common Ancistrus.

Home Forums Fresh and Brackish Water Fishes Growth rates in fry of common Ancistrus.

This topic contains 0 replies, has 1 voice, and was last updated by  MissA 4 years, 6 months ago.

Viewing 6 posts - 1 through 6 (of 6 total)
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  • #302596

    plesner
    Participant

    I recently got a question I was unable to answer. First a little prequel though:

     

    My experience with the fry of the common Ancistrus is that when I feed them what I consider properly, they tend to reach a size of 3 cm after about 10 weeks. There is however quite a big size difference between the largest and smallest fry. I’ve been told and have read several times, that it’s possible to get them to 3 cm under ‘optimal conditions’ in as little as 6 weeks.

     

    The question then is:

     

    If raised under ‘optimal conditions’, do you still get the big size difference in a batch of fry?

    #350136

    Matt
    Keymaster

    Any idea what these optimal conditions are Karsten?

    #350142

    mikev
    Participant

    i tend to see uniform growth rate without any attempts to create optimal conditions (no idea if it is 3cm after 10 weeks — I never paid much attention — but this sounds about right).

    The topic incidentally is a very interesting one. I probably bred about 20 species of rainbows… all but one do show uniform growth, but there is one that would not, no matter how much I try.

    #350151

    plesner
    Participant

    @matt said:
    Any idea what these optimal conditions are Karsten?

    Not really. Whenever I asked, I got some sort of vague answer. Constant access to food and lots of water changes. That’s not very informative to say the least.

    #350184

    Matt
    Keymaster

    I just wonder if the optimal conditions referred to by some breeders that sell these fish involve a specific, perhaps protein-rich, diet?

    #350548

    MissA
    Participant

    @plesner said:

    Not really. Whenever I asked, I got some sort of vague answer. Constant access to food and lots of water changes. That’s not very informative to say the least.

     

    I use to breed Bettas before and to get them to grow faster I gave them plenty of proteinrich food and made almost a 50% waterchange every day. It really worked on them. I think it had something to do with a hormone that the fry produced that stopped the growth in other fry. Unfortunatly I don’t remeber were I read it.

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