Fish drying systems in Mali
What the crop demands, what the country imposes, and what that means for capacity.
The Niger inland delta around Mopti is one of the great freshwater fisheries of the continent, and its catch is preserved almost entirely by smoking and sun-drying on open racks. Both work, in the sense that the fish keeps. Both also cost quality, and smoking over wood in an enclosed space costs the health of the person doing it.
The situation in Mali
Two quite separate agricultural countries share one border. The south around Sikasso is humid, green and grows mango, cotton and cereals; the inland delta and the Sahel run on livestock and river fish. Both are a long way from a port — Dakar and Abidjan are each a multi-day haul — so anything sold beyond the region has to be stable at ambient temperature before it moves.
Growing regions. Sikasso and Koutiala in the south, the Niger inland delta around Mopti
What fish drying demands
Fish is the most time-critical and highest-risk product here. Spoilage begins at landing, food-safety stakes are real, and the fat content of the catch decides the temperature ceiling — oily species cap at 45 °C or they finish correctly dried and rancid. What controlled drying replaces is smoke racks and open ground, both of which cost quality and, in the case of smoke, health.
Harvest calendar
November to March, as the flood recedes and fish concentrate in shrinking water. This is the peak and it is short — the delta fishery is intensely seasonal.
The working campaign window as the trade runs it. It shifts a fortnight either way with the rains.
Process parameters
| Parameter | Value |
|---|---|
| Drying temperature | 45–50 °C |
| Final moisture | 15–20 % |
| Yield (fresh : dried) | 3 : 1 |
| Cycle time | 10–16 h |
Sizing starting points from ordinary processing practice, not a validated recipe for your product. Confirm against your own intake and your buyer’s specification.
Worked sizing example
For a unit taking 4 tonnes of fresh product a day, at a yield of 3 : 1:
Illustrative figures calculated from the yield and campaign window above. They size a conversation; they do not describe any existing installation.
Fuel available in Mali
Cotton stalk from the Koutiala and Sikasso basin is the main resource. Rice husk from the Office du Niger is abundant but very ashy — blend it.
- Base load. Cotton stalk · Shea cake and shell · Rice husk
- Supplement. Corn cob · Groundnut shell · Sesame stalk · Dried mango peel
See all 27 fuels and their properties
Market and buyer requirements
Domestic and regional, moving to Bamako, Burkina Faso and Côte d’Ivoire. Dried Malian river fish is a staple protein across a much wider area than Mali itself.
Frequently asked questions
What does controlled drying replace at Mopti?
Open racks and smoke ovens. Both preserve the fish, but sun-drying exposes it to dust, insects and rewetting, and wood smoking loads the product with polycyclic aromatic hydrocarbons and the operator’s lungs with the same. Controlled hot air at 45–50 °C does neither.
How seasonal is the delta fishery?
Very. The peak runs November to March as the flood recedes, so a unit sees most of its raw material in about 150 days. Sizing for the peak means accepting idle capacity for half the year, or finding an off-season crop — around Mopti that usually means shea from June or sesame from October.
Does the species matter for the settings?
It sets the temperature ceiling. Lean species such as Nile perch and snakehead take 45–52 °C; oily fish must cap at 45 °C or they finish correctly dried and rancid within weeks. A mixed landing needs the fatty fraction separated, not averaged.
Size a unit in Mali
Tell us your daily fresh volume and target output, and we will size the chambers, the burner and the fuel available around your site.
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