Hamisi came to Dar Es Salaam in 2000 after he failed his 7th grade exam at a school in Mtwara (his home town). He came to the city and started working with his brother selling fish at their stall in the Msasani Fish Market. Soon he learnt to differentiate between fish that were in demand, those that were fresh, dynamited, and how to haggle during the auctions held by the fishermen. He then developed relationships with customers through his stall and eventually started delivering directly to their homes.