—In two coastal North Carolina rivers (Contentnea Creek and the Northeast Cape Fear River), we found the food habits of introduced flathead catfish Pylodictis olivaris to be primarily piscivorous, which could restructure or suppress native fish communities through direct predation. Fish or crayfish contributed more than 50% of the stomach contents by percent occurrence, percent by number, and p...

One of the main costs of the marine fish farms is the extruded feed. This paper discusses many issues given when fish, mussels, oysters or other shellfish are fed and their relation with the sustainability. There are several simulator software for fish growth and there are several published models for sustainability, but, as far as we know, there are very few simulator software for marine fish ...

Fermented fish food products have been extensively studied in Asia's fermented food culture. We have attempted to categorize the different types of fermented fish products seen in some of the Asian countries as part of a cultural context indicator analysis. Categorization is available through two cultural context indicators: the macro cultural context indicator and micro cultural context indica...

Fish parasites constitute widely diversified groups of unicellular and multicellular organisms. Recently, less known parasite groups have emerged as serious pathogens. Firstly, infection with dinoflagellates of the genus Ichthyodinium has been found during seed production of leopard coral grouper, Plectoropomus leopardus, in Japan and yellowfin tuna, Thunnus albacares, in Indonesia. Schizonts m...

Long–term trends of native and non–native fish faunas in the American Southwest.— Environmental degradation and the proliferation of non–native fish species threaten the endemic, and highly unique fish faunas of the American Southwest. The present study examines long–term trends (> 160 years) of fish species distributions in the Lower Colorado River Basin and identifies those native species (n ...

the effect of feeding frequency on growth performance, feed consumption and body biochemical composition of acipenser ruthenus juveniles was investigated. the trial was performed using 150 fish with a mean initial weight of 50±1 g randomly introduced in fifteen tanks. fishes were fed at a feeding frequency of twice daily (t1), three times a day (t2), four times a day (t3), five times a day (t4)...

Understanding the factors limiting migratory behaviour is fundamental to conservation of diadromous fish. Applications of indices of habitat suitability are problematic for diadromous fish because fish presence and abundance in relation to habitat quality are confounded by barriers to fish migration. An alternative approach is to assess diadromous fish distributions in proportion to distance in...