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http://indianaquariumhobbyist.com/community/ :: View topic - Rasboras of India
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Rasboras of India
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rasikanayak
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PostPosted: Sat Feb 05, 2011 9:54 am Post subject: Re: Rasboras of India Reply with quote

 Thanks,  Marc.  Your  explanation  of  the  lateral  traverse  scale  is  very  clear  Clapping  
 And  thanks  for  taking  the  trouble  of  marking  it  on  the  picture.  Really  greatful  Very Happy  
 
 The  fish  locality....
 
 001-Kumaradhara
 002-Tambraparani
 003-Tunga
 004-Sita
 005-kali  river  basin.
 
 
                                                 
Marc  wrote  (View  Post):                
I  sincerely  believe  if  someone  can  share  the  new  revision  by  Pethiyagoda  it  would  be  very  helpful.  A  lot  has  been  based  on  lateral  transeverse  scale  counts  in  the  revision.  Until  we  get  that  I  guess  we  would  be  blundering  and  going  around  in  circles  Sad                

 Very  true.  Rahul  and  Madhu  are  in  the  field  or  they  might  have  contributed  some  more  literature.  
 
 Regards,
 Nayak.
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diwan
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PostPosted: Sat Feb 05, 2011 5:16 pm Post subject: Re: Rasboras of India Reply with quote

 Thank  you  guys  for  giving  us  an  educative  and  healthy  thread.  Thumb Up   Thumb Up  
 
 Regards
 Dinesh.
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sid_p
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PostPosted: Sun Feb 06, 2011 11:09 am Post subject: Re: Rasboras of India Reply with quote

 Collected  near  Mandya
 
 
 
 
 
 The  lateral  lines  were  very  prominent.  Looks  Daniconius  to  me.
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Preeths
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PostPosted: Sun Feb 06, 2011 6:35 pm Post subject: Re: Rasboras of India Reply with quote

 Sid  do  you  have  pictures  from  the  day  we  caught  these,  they  were  absolutely  stunning!!
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Marc
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PostPosted: Sun Feb 06, 2011 7:40 pm Post subject: Re: Rasboras of India Reply with quote

                                                   
rasikanayak  wrote  (View  Post):                
Thanks,  Marc.  Your  explanation  of  the  lateral  traverse  scale  is  very  clear  Clapping  
 And  thanks  for  taking  the  trouble  of  marking  it  on  the  picture.  Really  greatful  Very Happy  
                 

 
 Most  welcome  Nayak,  I  enjoy  sharing  what  I  know  Smile  
 
 
                                                 
sid_p  wrote  (View  Post):                

 The  lateral  lines  were  very  prominent.  Looks  Daniconius  to  me.
                 

 
 Yes,  I  agree  with  you
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Marc
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PostPosted: Tue Feb 08, 2011 3:33 pm Post subject: Re: Rasboras of India Reply with quote

 Hey  guys  I  got  the  revision  of  Rasbora.  Thanks  to  Balaji  (catman).  As  per  the  latest  revision  the  following  are  the  diagnostic  characters.  The  latest  revision  uses  the  mouth  shape  as  one  of  the  components  for  diagnosis.  
 
 A  few  technical  terms  simplified  
 
 Symphysial  knob  –  the  knob  (hook)  like  structure  found  at  the  tip  of  the  lower  jaw
 Maxillary  lateral  process  –  flap  of  flesh  on  the  sides  of  the  upper  jaw.  
 
 The  main  characters  of  the  known  species  are  as  follows……….
 
 Rasbora  dandia  
 Prominent  lateral  stripe  more  than  one  scale  high.  Symphysial  knob  not  prominent.  27-31  pored  lateral  line  scales  and  13-14  predorsal  scales.
 
 Rasbora  wilpita  known  only  from  Srilanka  
 Prominent  symphysial  knob  prominent  maxillary  lateral  process  and  some  morphometrics.
 
 Rasbora  microcphalus
 Axial  stripe  faint.  Symphysial  knob  absent.  29-32  pored  lateral  line  scales  and  15-16  predorsal.  
 
 Rasbora  armitagei  known  only  from  Srilanka
 Prominent  symphysial  knob,  prominent  maxillary  lateral  process  and  some  morphometrics.
 
 Rasbora  naggsi    known  only  from  Srilanka
 Lateral  stripe  faint.  Symphysial  knob  and  maxillary  lateral  process  absent.  
 
 The  morphometric  distinguishing  is  done  as  close  as  0.2%  Standard  length  which  am  sure  we  cannot  discern  with  these  photos.  Will  get  back  with  the  idy’ing  after  I  understand  the  paper  more.
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PostPosted: Wed Feb 09, 2011 9:44 am Post subject: Re: Rasboras of India Reply with quote

 Great,  Great  Cheering  
 
 Eagerly  waiting  Very Happy  
 
 Regards,
 Nayak.
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Marc
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PostPosted: Mon Feb 14, 2011 1:33 pm Post subject: Re: Rasboras of India Reply with quote

 Now  to  id  the  fish.
 
 Please  note  am  strictly  following  the  latest  revision  and  not  giving  my  opinion  any  chance  to  pitch  in.  Neutral   
 
 
 
 Fish  posted  by  Beta
 
   id  Rasbora  dandia
 reason:  complete  laterla  line,  Prominant  lateral  dark  band;  not  a  very  prominant  symphyseal  knob
 
 
 
 Fish  posted  by  Ben
 
 id  Rasbora  microcephalus
 reason:  complete  lateral  line;  lateral  dark  band  fainter  towards  the  tail;  dorsal  to  hypural  distance  falls  behind  eye  orbit
 
 
 
 Fish  posted  by  Balaji
 
 id  Rasbora  armitagei  Not  sure
 reason:  Cant  see  the  mouth.  The  reason  I  id  it  as  the  Srilankan  sp  is  due  to  the  saw  toothed  appearance  of  the  Lateral  dark  band
 
 
 
 Both  fish  posted  by  Beta
 id  Rasbora  dandia  Not  sure
 reason:  Cant  see  the  mouth  clearly.  faint  saw  toothed  appearance  of  the  Lateral  dark  band.  Symphyseal  knob  is  a  bit  prominant
 
 
 
 Both  fish  posted  by  Beta
 
 id  Rasbora  dandia
 reason:  complete  laterla  line  stripe,  Prominant  lateral  dark  band  not  a  very  prominant  symphyseal  knob
 
 
 
 fish  posted  by  Saikumar
 
 id  Rasbora  dandia  (tentative)
 reason:  Pic  not  clear...........  Sad  
 
 
 
 fish  posted  by  Nikhil
 
 id  Rasbora  microcephalus
 reason:  dorsal  to  hypural  distance  falls  behind  eye  orbit;  lateral  band  faint
 
 
 
 fish  posted  by  Nayak
 
 id  Rasbora  armitagei
 reason:  saw  tooth  lateral  band  and  lower  jaw  formation
 
 
 
 fish  posted  by  Nayak
 
 id  Rasbora  microcephalus
 reason:  dorsal  to  hypural  distance  falls  behind  eye  orbit;  lateral  band  faint
 
 
 
 
 Both  fish  posted  by  Nayak
 
 id  Rasbora  dandia
 reason:  reason:  complete  laterla  line  stripe,  Prominant  lateral  dark  band  not  a  very  prominant  symphyseal  knob  (seen  in  the  other  pic  posted)
 
 
 
 Fish  posted  by  Nayak
 
 id  Rasbora  dandia  (tentative)
 reason:  I  cant  see  dorsal  insertion  and  the  fish  looks  stressed  to  show  the  lateral  band
 
 
 
 Fish  posted  by  Sid
 
 id  Rasbora  dandia
 reason:  complete  laterla  line,  Prominant  lateral  dark  band  not  a  very  prominant  symphyseal  knob  (seen  in  the  other  pic  posted  by  sid)
 
 
 This  is  to  the  best  of  my  understanding  of  the  latest  revision.  Improvements  and  corrections  are  likely  Smile
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PostPosted: Mon Feb 14, 2011 2:02 pm Post subject: Re: Rasboras of India Reply with quote

 Marc,
 
 A  coincidence.  I  was  just  going  through  the  paper  you  had  sent  and  the  status  as  of  now,  I  have  both  my  hands  holding  up  my  head.  It  feels  so  heavy.
 
 I  too  will  try  to  take  better  pictures  of  the  ones  I  have  and  try  to  match  to  the  description.
 
 Thanks  once  again  Very Happy  
 
 Regards,
 Nayak.
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Marc
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PostPosted: Mon Feb 14, 2011 2:09 pm Post subject: Re: Rasboras of India Reply with quote

                                                   
rasikanayak  wrote  (View  Post):                
Marc,
 I  have  both  my  hands  holding  up  my  head.  It  feels  so  heavy.
                 

 
 Nayak...........am  flat  on  the  ground  seeing  stars  Chuckle
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Gachua1
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PostPosted: Mon Feb 14, 2011 2:37 pm Post subject: Re: Rasboras of India Reply with quote

 Anyways,  I  would  really  like  to  thank  you  for  all  the  pains  taken  to  match  description  and  the  photographs.  Thank  you!  Thumbs Up  
 
 Good  to  know  that  I  was  not  going  mad,  with  the  specimen  which  does  not  look  like  a  danonicus  :-)
 
 Cheers
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Marc
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PostPosted: Mon Feb 14, 2011 9:52 pm Post subject: Re: Rasboras of India Reply with quote

 Hey  guys......Something  very  interesting  I  stumbled  upon..........
 
 The  new  revision  distinguishes  the  North  Indian  Rasbora  as  Rasbora  daniconius  as  having  incomplete  lateral  line  and  the  South  Indian  Rasbora  as  Rasbora  dandia  having  a  complete  lateral  line..............
 
 Now  I  have  a  few  specimens  given  by  a  good  friend  from  North  Bengal  the  type  locality  of  R.  daniconius  with  a  complete  lateral  line.  Check  out  the  pic  below!!!  Chuckle  
 
 
 
 Guess  the  difference  between  R.  dandia  and  R.  daniconius  is  not  the  Lateral  line  after  all.  Smile
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PostPosted: Mon Feb 14, 2011 10:09 pm Post subject: Re: Rasboras of India Reply with quote

 Marc,
 
 You  have  to  write  the  papers!  I  always  said  this  and  I  believe  Madan  also  was  of  this  opinion.
 
 The  more  I  go  through  the  Rasbora  paper  you  sent  me,  The  more  discrepancy  I  find.  This  is  not  to  cast  any  unsavoury  aspirations  on  any  of  the  scientists.  But  the  paper  is  still  vague,  and  I  might  be  wrong  Smile  
 
 Regards,
 Nayak.
 P.S:  a  most  common  fish,  which  any  novice  fish  catcher  can  catch  and  we  do  not  know  what  they  are.  Glory  be  to  the  aquarium  hobby!
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PostPosted: Mon Feb 14, 2011 11:24 pm Post subject: Re: Rasboras of India Reply with quote

                                                   
rasikanayak  wrote  (View  Post):                
The  more  I  go  through  the  Rasbora  paper  you  sent  me,  The  more  discrepancy  I  find.  This  is  not  to  cast  any  unsavoury  aspirations  on  any  of  the  scientists.  But  the  paper  is  still  vague,  and  I  might  be  wrong  Smile  
                 

 
 Nayak,  Am  quite  sure  you  are  not  wrong................I  have  just  delved  into  the  filament  complex  and  guess  I  have  got  the  next  group  of  fish  waiting  to  keep  me  busy.  Thanks  to  you,  Beta  and  other  IAH  guys  for  starting  this  thread  and  sharing  valuable  inputs.  Thumb Up
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PostPosted: Tue Feb 15, 2011 9:25 am Post subject: Re: Rasboras of India Reply with quote

                                                   
Marc  wrote  (View  Post):                

 Nayak,  Am  quite  sure  you  are  not  wrong................I  have  just  delved  into  the  filament  complex  and  guess  I  have  got  the  next  group  of  fish  waiting  to  keep  me  busy.  Thanks  to  you,  Beta  and  other  IAH  guys  for  starting  this  thread  and  sharing  valuable  inputs.  Thumb Up                

 
 Finish  that  one  too  you  have
 3.  S.  denisonii  complex
 4.  P.  fasciatus  complex
 5.  Crimson  loach  complex
 6.  Badis  of  Western  ghats
 7.  Garra
 
 ....  thinking  of  an  early  VRS?   No  way!   Chuckle
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