Abstract Biological invasion is a strong threat to native biodiversity, with limnic systems being especially vulnerable due historical separation and resulting prey naivety. The naivety hypothesis states that species may not be able recognize novel predators lack of common evolutionary background and, therefore, become easy targets. In laboratory experiment, we added cues European bullhead ( Co...

A new hovering goby or dartfish is described from material collected in Mexico, Costa Rica and Panama. It is the only species of the cosmopolitan genus Ptereleotris known from the eastern Pacific. It is distinguished from its Western Atlantic and Indo-Pacific congeners by its low fin-ray counts, prominent median keel on the ventral margin of the head, lanceolate caudal fin with dusky lower half...

To gain a deeper understanding of how environmental conditions affect brain plasticity, brain size was explored across different seasons using the invasive round goby Neogobius melanostomus. The results show that N. melanostomus had heavier telencephalon in the spring compared to the autumn across the two years of study. Furthermore, fish in reproductive condition had heavier telencephala, indi...

The objective of this project is to compare growth and survival rate in Chinese carps reared under traditional culture conditions versus those reared in ponds treated with slurry (anaerobic fermented of cow manure). This experiment was conducted using two treatments one treatment using slurry and the other using cow manure plus chemical fertilizer as the control with three replicates for each....

In the intertidal fish Bathygobius ramosus, larger males are more likely to reproduce than smaller ones due to male-male interactions and female preferences. Additionally, larger males are favored in foraging via intra-specific and inter-specific competition. Activity performance is also an important function associated with the ability to perform courtship, male-male interactions, and parental...

Gobies and their ectoparasitic monogenean flatworms are promising models for species diversification because of richness. Recent decades have seen the discovery several new Gyrodactylus (Monogenea: Gyrodactylidae) on European gobies, mostly in sand goby lineage especially eastern Mediterranean. However, fauna other gobies is much less understood. Therefore, we inspected five gobiid (34 specimen...

Aquatic surveys for fish in large water bodies (e.g., Laurentian Great Lakes of North America) often require a flexible approach using multiple methods, surveying different depths, and sampling across seasons, especially when the target species is elusive its natural habitat. The round goby (Neogobius melanostomus) an invasive, bottom-dwelling inhabiting rocky areas all five Lakes. While trawl ...