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, ...

in this study, length-weight relationship of three populations of fingerling roach (rutilus rutilus caspicus), wild, farmed and mix were investigated with the fish reproduce in the center of the proliferation of bony fish syjeval harber. in order to check the length-weight, 587 sample fish by hand sachook during the release into the sea. minimum and maximum total length of respectively 17.14 (f...

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...

the boojagh international wetland with a surface area of 80 hectares and 25 fish species is located in the southwest shores of the caspian sea (guilan province, iran), but there is no report about fish parasites in this wetland. in the present study, a total of 553 individuals of 8 fish species including cyprinus carpio (n=71), abramis bjoerkna (n=153), carassius auratus gibelio (n=89), esox lu...

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...

the histology of digestive tract of caspian roach (rutilus rutilus caspicus) were studied for 53 days from hatching to fingerling size at the natural habitat of the larval stage. ages 1, 4, 10, 18, 28, 39 and 53 days after hatching (dah) were selected for the histological studies. after sampling and fixation with 10 percent formalin the histological process were conduct. the newly hatched larva...