Once the eggs have been received at Three Streams Salmon & Trout in Franschhoek they are distributed amongst 6 hatching troughs.
Each trough can hold up to 100 000 eggs. The Eggs are laid on hatching trays, which permit continuous flow of oxygen rich water over the eggs. The eggs take up to 2 – 5 days to hatch.
Within approximately 5 days of hatching, the hatchlings (known as Alevin) absorb their yolk sacks. The Alevin rely on their yolk sacs for their nutrition.
Once the yolk sacks have been absorbed, the fish (now known as Fry) in the trays are gently tipped out into the troughs and put onto feed.
This specially formulated diet enables us to produce the healthiest, strongest fry possible.
Fish remain in the hatchery for 1 – 2 weeks (they grow to approx. 0,5g’s) and are then transferred into the nursery.
Fish are grown in the nursery tanks to approx. 2g’s. Once they reach the 2g mark, they are moved to the grow out tanks where fish are further grown to approximately 20g’s.
The timeline from egg to fingerling is approximately 3 months.
At this stage the Trout are known as fingerlings, and are each individually vaccinated before being transported to Lesotho. The vaccine is specially formulated to enable the fish to cope with any potential pathogen they may encounter in the Katse Dam.
The pre-vaccinated fingerlings are placed in transport tanks, evenly split between 10 tanks at the back of our state of the art Live Fish transport truck. The rig has a capacity of 25,000 liters and approximately 2,5 tons of fingerlings are transported per trip.
Water quality parameters such as temperature and dissolved oxygen are continuously monitored throughout the trip, enabling us to minimize stress and achieve survival rates of above 99%.
The direct journey takes between 24 and 36 hours.