Fruit Fly
Largest brain map ever reveals fruit fly’s neurons in exquisite detail - https://www.nature.com/articles/d41586-024-03190-y - Wiring diagram lays out connections between nearly 140,000 neurons and reveals new types of nerve cell.
FlyWire is a human-AI collaboration for reconstructing the full brain connectome of Drosophila - https://flywire.ai/