LOGIN

RSS Facebook Twitter YouTube
GLOSSARY       

SEARCHGLOSSARY

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

PROFILESEARCH

Causes And Effects Of Stunting In Goldfish

Home Forums Fresh and Brackish Water Fishes Causes And Effects Of Stunting In Goldfish

This topic contains 0 replies, has 1 voice, and was last updated by  poshsouthernbird 5 years, 9 months ago.

Viewing 8 posts - 1 through 8 (of 8 total)
  • Author
    Posts
  • #301961

    poshsouthernbird
    Participant

    I’m trying to get some info together for an article on stunting in goldies. There’s all sorts of stuff on t’interweb but I want to try and understand the actual physical/biological processes that cause it and what the effects are.

    Personally I think malnutrition is a big cause with the ‘do not over feed’ mantra leading some people to massively underfeed.

    The too small tank side of things seems to have other things woven in with it; if you have a small tank you are probably also underfeeding, whether knowingly or not, to stop pollution building up too much.

    Water quality presumably features too, again this weaves in with the too small tank.

    I’ve heard a lot about ‘growth inhibiting hormones’ or similar but I don’t know what the proper name for these are or how they work.

    I’ve also seen a lot of posts about how the body stops growing but the internal organs don’t. I’d really like to know how true this is and what the repercussions really are for the fish in question.

    What I’d like is some proper evidence, research, papers, links … anything that could provide some definitive answers. Obviously I’m doing my own research as well but as you can imagine googling ‘stunting on goldfish’ is bringing up all manner of stuff!

    If anyone can help, or point me towards further info I’d be very grateful

    #346808

    unissuh
    Member

    Ignoring diet and water quality, I’ve always thought (& I could be completely wrong) that stunting revolves around cortisol.

    Apparently this is measurable in water stocked with fish, increases from handling (see Ellis et al, J Fish Biol 2004) & also correlates to stocking density (see Ruane & Komen, Aquaculture 2003). Think it’s pretty well known what cortisol does as a stress hormone – pretty much everything described to happen from “stunting”. You’ll probably find a lot more good papers from an aquaculture perspective.

    #346813

    Matt
    Keymaster
    #346854

    poshsouthernbird
    Participant

    Thanks for the posts /smile.gif” style=”vertical-align:middle” emoid=”:)” border=”0″ alt=”smile.gif” />

    I see so many posts (on various forums) about goldies growing to the size of the tank, and so many explanations of what happens to them when they stunt. I really want to understand more about it. I saw a post the other day on another forum (not one I post on, just one I nose on now and again) where a 24 year common goldie was ill; it had been kept in a 23×12 inch tank. Now obviously it was stunted but had lived 24 years. That sort of ‘my grandad smoked 100 a day, only drank whisky, ate fried egg sandwiches three times a day and lived to be 107’ makes it hard to get people to understand why what they are doing isn’t right So I want to try and put something together with some info that Joe Public will be able to understand. But that means I need to get a better understanding of it first /smile.gif” style=”vertical-align:middle” emoid=”:)” border=”0″ alt=”smile.gif” />

    Effects of high nitrates (admittedly not on goldies specifically but there may be parallels)

    http://www.sciencedirect.com/science/artic…044848682900424

    Some info about pheromones

    http://onlinelibrary.wiley.com/doi/10.1111…ACC7B75B.d03t03

    http://books.google.co.uk/books?id=jdYOAAA…ish&f=false

    And hormones

    http://www.springerlink.com/content/qv26156x516365u1/

    And an article from PFK

    http://www.practicalfishkeeping.co.uk/content.php?sid=4656

    I should add I’ve not read through these yet, just thought I’d post for info if anyone else is interested

    #346881

    Matt
    Keymaster

    It’s not just goldfish by the way Sue, though obviously that’s your personal passion – I’d argue that many aquarium fishes fail to reach their natural maximum size in aquaria.

    #346900

    Plaamoo
    Participant

    Just curious, do you think the opposite ever occurs Matt? Fish grow larger due to plenty of easy food and less energy expended for various reasons.

    #346903

    Matt
    Keymaster

    As a rule I’d say no, but guess that over-fed/overweight specimens might weigh more than the average wild fish of comparable age and size?

    #346905

    poshsouthernbird
    Participant

    I’m sure you’re right about various other species being affected Matt, I’d guess most of the ‘big’ popular ones like common plecs, clown loaches, angels etc. rarely reach their full size. Goldies are my personal interest, and I suspect they are the ones that Joe Public thinks of when they think fish grow to the size of their tank, but ideally (I really do aim for a very ideal world!) I’d like to raise awareness of the problem all round

    Author
    Posts
Viewing 8 posts - 1 through 8 (of 8 total)

You must be logged in to reply to this topic.