Abstract Risk analyses for invasive species often assume that the characteristics of future invaders will resemble those already successful, but these features may change. Here, we use data from more than 3,500 fish sampling events, sequencing mitochondrial and nuclear genes several traits describing non‐native to describe irruption rapid expansion loaches in Catalonia, north‐east Iberian Penin...

The analysis of environmental DNA (eDNA) is becoming integrated as an established biomonitoring tool, often characterized by detection limits exceeding those conventional counterparts. However, further improving the sensitivity these methods may be invaluable for early invasive species, or locating remnant populations endangered and adequate quantification their abundances. In this study, we pr...

The present study the selected heavy metals such as cadmium (Cd), chromium (Cr), lead (Pb), Manganese (Mn) and cooper (Cu) were determined in water, sediment and gill, liver, muscle of fish H. fossilis, the concentration of Cd, Cr, Pb, Cu Mn and Zn was observed 0.009, 0.056, 0.056, 0.058, 0.049, 0.883, 0.36 mg/l in river water and 3.38, 20.11, 81.53, 258.48, 258.48, 3.40 μg/g in sediment respec...

Static renewal evaluation of the acute toxicity of an organophosphate pesticide, dimethoate against the freshwater fish H. fossilis was conducted in the laboratory. H. fossilis showed behavioural changes against dimethoate intoxication. There were increased opercular movement, sluggish, lethargic and abnormal swimming, loss of buoyancy and muscular tetany. The treated fishes also showed fading ...