heavy metal accumulation in the aquatic ecosystems is a main concern which threats human health. in this study two commercial fish species, rutilus kutum and chelon aurata were selected for assessing heavy metal (cd, pb, zn) concentrations in gill and liver tissues at babolsar’s coast, the southern caspian sea, iran. babolsar is one of the important fishery stations in the southern caspian sea....

Fish communities differ significantly between the littoral and pelagic habitats. This paper attempts to define shift in two habitats based on European standard gillnet catch. We sampled benthic from shore Lake Most Římov Reservoir (Czech Republic). The 3 m deep nets were spanned across water body at equal distances boundary points, where depth was 3.5 m. community contained more fish, species, ...

Roach (Rutilus rutilus) and perch (Perca fluviatilis) are dominant species in northern-temperate lakes of Europe, their relative importance depending on trophic state habitat complexity. We studied the distribution roach over a 15-year period two Danish lakes, Lake Væng, undergoing major changes water clarity macrophyte coverage, permanent turbid Søbygård. used multi-mesh sized gill nets 5-6 di...

Dual-energy x-ray absorptiometry (DXA) is a nondestructive technique that can potentially measure specific components of whole-body composition in free-living and lab-raised animals. Our aim was to test the ability of DXA to measure the composition of a common arvicoline rodent, the northern red-backed vole (Clethrionomys rutilus). We used a DXA apparatus to obtain measurements of fat mass (FM)...

Pseudochromis oligochrysus new species is described from nine specimens collected from Nusa Penida (off Bali) and Pura Island (between Pantar and Alor), Indonesia. It resembles P. flavopunctatus Gill & Randall from Komodo, Indonesia, but differs in live coloration and scale counts. Pseudochromis rutilus new species is described from the holotype collected from Nusa Penida. It differs from simil...