Submitted on: 08 May 2001.
Revised on: 27 August 2001.
Accepted on: 18 September 2001.
___________________ACTA ICHTHYOLOGICA ET PISCATORIA
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Submitted on: 27 September 2006.
Revised on: 30 December 2006.
Accepted on: 05 February 2007.
___________________ACTA ICHTHYOLOGICA ET PISCATORIA
Submitted on: 14 January 1999.
Revised on: 02 May 1999.
Accepted on: 19 June 1999.
___________________ACTA ICHTHYOLOGICA ET PISCATORIA