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http://indianaquariumhobbyist.com/community/ :: View topic - Myth of sex change in swordtails
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Myth of sex change in swordtails

 
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Ram_a_rosi
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PostPosted: Tue Dec 20, 2011 4:02 pm Post subject: Myth of sex change in swordtails Reply with quote

 Hi  Friends
 Found  one  more  item  when  glancing  through  a  magazine.
 
 Tempereture  is  a  major  factor  affecting  the  growth  of  swordtails.  Lower  temperatures  have  a  dramatic  effect  on  the  age  at  which  many  swordtails  sex  out.  Instead  of  fish  that  are  sexually  mature  and  breeding  at  only  four  months  of  age,  most  males  will  not  start  to  mature  untill  they  are  six  months  ol,  and  many  even  older.  This  is  one  way  in  which  the  myth  of  sex  changes  amongst  swordtails  has  developed.  Some  males  may  look  like  famales  for  a  year  or  more  before  finally  developing  a  sword  and  gonopodium.  These  are  certainly  late-maturing  fish,  but  they  have  always  been  males.  Old  females  may  also  develop  male  characteristics  later  on  in  life,  but  they  never  develop  into  functioning  males  nor  court  other  females.
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Tabby
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PostPosted: Tue Dec 20, 2011 8:24 pm Post subject: Re: Myth of sex change in swordtails Reply with quote

 Bingo!  Have  noticed  this  when  I  bred  several  varieties  of  swordtails  long  back.  Usual  trend  was  these  late  maturing  males  used  to  grow  swords  on  larger  and  chunkier  bodies  eventually.
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crazyomzi
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PostPosted: Tue Dec 20, 2011 8:35 pm Post subject: Re: Myth of sex change in swordtails Reply with quote

 true.  even  i  noticed  this  long  back  when  i  had  dozens  of  swords
 
 omkar
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Bobby24
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PostPosted: Wed Jun 27, 2012 10:00 pm Post subject: Re: Myth of sex change in swordtails Reply with quote

 I  have  had  a  female  swordtail  who  spawned,  grow  a  gonopodium  and  mate  with  other  females,  so  I  do  not  think  it  is  a  myth.
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superbsite
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PostPosted: Thu Aug 16, 2012 11:46 pm Post subject: Re: Myth of sex change in swordtails Reply with quote

 I've  read  about  this  too  but  never  knew  that  there  were  so  many  who  actually  experienced  it
 
 Q:  Will  Sword  Tails  live/thrive  like  Mollies/Guppies/Endlers  in  buckets  kept  out  in  the  sun  ?
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Madan
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PostPosted: Fri Aug 17, 2012 6:46 am Post subject: Re: Myth of sex change in swordtails Reply with quote

 They  will  jump  out.
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sandeepraghuvanshi
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PostPosted: Fri Aug 17, 2012 9:59 am Post subject: Re: Myth of sex change in swordtails Reply with quote

 If  they  don't  get  boiled  before  that.
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Ram_a_rosi
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PostPosted: Fri Aug 17, 2012 10:10 am Post subject: Re: Myth of sex change in swordtails Reply with quote

 Sandeep  
 I  have  a  bucket  which  is  always  full  and  i  have  endless  no  of  endlers  in  it  the  water  has  turned  Dark  Green  but  they  are  thriving.  
 there  is  sun  light  from  morning  till  the  noon.  they  have  turned  hardy  adjusting  themselves  to  the  vagrancies  of  nature
 Had  only  couple  of  female  and  males  they  have  become  manyyyyyyy.
 
   Cheering
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superbsite
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PostPosted: Fri Aug 17, 2012 11:16 am Post subject: Re: Myth of sex change in swordtails Reply with quote

 Thanks  Madan
 So  the  Swordtails  are  jumpers  and  sensitive  to  temperatures
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crazyomzi
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PostPosted: Fri Aug 17, 2012 3:02 pm Post subject: Re: Myth of sex change in swordtails Reply with quote

 @bobby24
 thats  not  possible.
 
 other  please  correct  if  am  wrong
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vidhyasagar99
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PostPosted: Fri Aug 17, 2012 8:58 pm Post subject: Re: Myth of sex change in swordtails Reply with quote

 what  about  lyretail  swords,it  seems  that  males  are  sterile  which  develop  double  swords,  ihave  the  but  they  look  wonderfull  ,i  have  females  also,but  not  have  seen  any  sex  change  in  the  juviniles
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Nidhi
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PostPosted: Fri Aug 17, 2012 9:15 pm Post subject: Re: Myth of sex change in swordtails Reply with quote

 Omkar  and  Ramdas..
 I  remember  reading  long  back  that  a  sword  will  change  sex  only  when  one  type  of  sex  is  present  in  an  community.
 Like,  if  we  have  only  females  then  the  dominating  female  will  turn  to  male  and  if  only  males  are  present  then  the  least  dominating  male  will  change  to  female.
 But,  practically  have  not  witnessed  it.
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vidhyasagar99
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PostPosted: Fri Aug 17, 2012 10:52 pm Post subject: Re: Myth of sex change in swordtails Reply with quote

 the  myth  is  also  true  in  humans  also,  i  have  been  with  the  web  or  internet  for  a  long  time  infact  from  1996,  which  was  very  difficult  to  acesss,  but  i  saw  one  thing  ,when  there  were  less  amount  of  indian  females  on  the  net  in  chat  or  social  networks  many  men  disgiused  as  women  id's  would  pop  up
 
 its  very  true  even  today  on  facebook,orkut  etc  etc,   Chuckle   Chuckle   ROFL   ROFL  ,iah?
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crazyomzi
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PostPosted: Sat Aug 18, 2012 12:47 am Post subject: Re: Myth of sex change in swordtails Reply with quote

                                                   
vidhyasagar99  wrote  (View  Post):                
the  myth  is  also  true  in  humans  also,  i  have  been  with  the  web  or  internet  for  a  long  time  infact  from  1996,  which  was  very  difficult  to  acesss,  but  i  saw  one  thing  ,when  there  were  less  amount  of  indian  females  on  the  net  in  chat  or  social  networks  many  men  disgiused  as  women  id's  would  pop  up
 
 its  very  true  even  today  on  facebook,orkut  etc  etc,   Chuckle   Chuckle   ROFL   ROFL  ,iah?                

 
   ROFL   ROFL   Chuckle   Chuckle   ROFL   ROFL
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