Adventure fishing in these countries is amazing, the Himalayas are the source of Asia’s largest rivers and countless smaller streams and lakes. There are around 118 varieties of fresh water fish in the Himalayan waters of Nepal and India. The golden Mahaseer is the most commonly sought sport fish, then there are varieties of mountain stream trout, lowland water species and freshwater Eel. Fishing holidays include a professional English speaking guide and a totally tailor-made journey for individuals or small groups. Customer testimonials.