Man Selling Fish

I was in a business travel working in a litecoin farm in Trinidad and Tobago, this day the building have electricity problem so we are waiting for the electricity personal of the city when this curious person go walking whit his bike and a strange noise I ask for the electricity personal why he do that? They tell me is normal see people like this they sell fresh fish of the coast in the near towns. it's really curious what you can see in other countries.