Submitted on: 07 March 1999.
Revised on: 21 June 1999.
Accepted on: 24 July 1999.
___________________JOURNAL OF APPLIED ICHTHYOLOGY
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Submitted on: 12 May 2023.
Revised on: 31 July 2023.
Accepted on: 21 August 2023.
___________________JOURNAL OF APPLIED ICHTHYOLOGY
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