Upwelling
The major upwellings in the ocean are associated with the divergence of currents that bring deeper, colder, nutrient rich waters to the surface. There are at least five types of upwelling: coastal upwelling, large-scale wind-driven upwelling in the ocean interior, upwelling associated with eddies, topographically-associated upwelling, and broad-diffusive upwelling in the ocean interior.
Synodontis batesii
In the wild, the species inhabits tropical waters with a temperature range of , and a pH of 6.5 – 7.0. It is found in the Dja River basin and the central Congo River basin. It has been seen in the Nyong River and the Ntem River of Cameroon, the Ivindo River, and the Ogooué River of Gabon, and the Río Muni of Equatorial Guinea.