The successful fish upstream movement through a dam/gate is closely associated with the hydraulic conditions of fishway. To improve passage efficiency, this study investigated swimming behaviors juvenile grass carp, representative four major Chinese carps, under characteristic designed vertical slot fishway model. impacts different discharges and baffle lead angles on test were analyzed, select...

CURRENT SCIENCE, VOL. 88, NO. 12, 25 JUNE 2005 1897 It provides an important link in the evolution of insects. The morphological characters of the reported bug, such as small body, short antennae comprising three segments, three-segmented, backwardly directed rostrum with thorax being the largest among the three parts of the insect body, are not yet known in a living or fossil insect family. It...

In many North American rivers, populations of multiple species of non-native cyprinid fishes are present, including black carp (Mylpharyngodon piceus), grass carp (Ctenopharyngodon idella), bighead carp (Hypophthalmichthys nobilis), silver carp (Hypophthalmichthys molitrix), common carp (Cyprinus carpio), and goldfish (Carassius auratus). All six of these species are found in the Mississippi Ri...

Background: Synthetic azo dyes are very extensively using various industries such as food items and non-food items. Tartrazine is well known dye due to its wide range of applications, also acid yellow 23. Most release these containing effluents into water bodies without proper treatment. There no well-documented study about the toxicological effect tartrazine in fishes. studies with concentrate...