07.10.2014

White gold from Riba-roja

Tostedt. Catfish are a master of camouflage and it is not unusual for a fish to adapt its skin colour to the natural environment. On the Po in Italy the fish are mostly grey while in France they tend to be darker owing to the very clear waters. In Spain, the heads of catfish are pitch black and on the Rhine in Germany they are often light grey owing to the gravelly river beds.However, there are some waters where catfish live whose skin colouration is different from all other catfish. These catfish are bright white owing to a gender defect and normally have red eyes. The experts refer to this...