Nature-like fish passes are commonly designed as a preferred way to overcome barriers in rivers. However, meeting the recommended hydraulic parameters for these can be challenging. As result, boulders or sills often incorporated supplement their structure. From standpoint, crucial under investigation depths and velocities (or corresponding velocity field). In this study, comprehensive analysis ...

Abstract Accurate reorganization of harvested species is essential for appropriate fisheries monitoring but often unnoticed. In this study, an attempt was made to provide accurate description based on fish taxonomy and otolith shape parameters nine sea catfishes living in Pakistan. The lapillus, the largest catfishes, includes position umbo, structure anterior mesial projection (amp), incisura ...

The hill stream loach genus Indoreonectes is endemic to peninsular India south of the Satpura ranges and represented by three species I. evezardi , keralensis telanganaensis . has been suggested as a complex based on recent genetic studies; however, due lack type material delimitation difficult. Here we redescribe collected from its locality describe two new northern Western Ghats India. neeles...

A new species of sawshark, Pristiophorus lanae sp. nov., is described from off the Philippine Islands. The new species is the second member of the genus Pristiophorus described from the western North Pacific and can be separated from its closest geographic congener, P. japonicus, by having fewer rostral teeth in front of rostral barbels (17-26 versus 25-32), mouth at corners extending forward t...

This paper continues descriptions of new deep-water Antarctic barbeled plunderfishes of the poorly known and the most speciose notothenioid genus Pogonophryne. It is based on a comprehensive collection obtained by the authors in 2009-2010 during an Antarctic toothfish (Dissostichus mawsoni) fishing trip. A new species, the hopbeard plunderfish Pogonophryne neyelovi, the twenty-second species of...

The aim of this preliminary research was to establish if there are intersex occurrences in wild freshwater fish in Slovenian rivers and streams. In the first study we evaluated all fish species of both sexes obtained from the river Ljubljanica from its source to mouth. In the second study we focused on the rainbow trout (Oncorhynchus mykiss) and brown trout (Salmo trutta m. fario) males from 30...