ShoShin AI Early Warning — Kenya's Sensor-Based Alert System for Lake Victoria Fish Kills

Cage-based tilapia farming on Lake Victoria at Dunga Beach, Kisumu, has suffered episodic mass fish kills from dissolved-oxygen crashes linked to algal blooms fed by untreated urban waste and agricultural runoff. A 2022 KMFRI survey found more than three-quarters of Kenyan fish farmers had experienced mortalities, and 2024-25 oxygen crashes destroyed roughly US$1 million in fish stock at Dunga Beach alone.

Detect dissolved-oxygen crashes early enough to give farmers time to move cages and avert mass fish kills.

Kenya's Marine and Fisheries Research Institute (KMFRI) and the Nairobi-based ShoShin Innovation Hub deployed underwater sensors and cloud-hosted AI models, trained on KMFRI's historical fish-kill research combined with live sensor readings; alerts trigger SMS messages with simple, actionable guidance ('slow feeding', 'move cages') to the feature phones of more than 300 tilapia farmers.

In February 2026 the system flagged a dissolved-oxygen crash below the 2.0 mg/L threshold associated with fish kills; more than 300 farmers relocated more than 450 cages within hours. No further mass fish deaths have been recorded at Dunga Beach since the alert, against a 2024-25 baseline of roughly $1 million in losses at the same site.

Researchers and reporters describe the system as buying farmers the hours between an oxygen crash and a total loss, not as addressing the underlying pollution driving the crashes. Open concerns include rural connectivity gaps, the sustainability of funding once government support tapers off, and unresolved questions about who controls farmers' sensor data over time. KMFRI has identified 15 further high-risk hotspots for possible expansion, with two more sites expected to go live in the second half of 2026, and the NGO WorldFish is adapting a similar approach (E-Samaki) for coastal mariculture sites in Kilifi and Kwale counties.