One key difference between the human nervous system and that of an angler fish is the complexity of their neural structures. While humans have a highly evolved and intricate nervous system with a brain that controls various sensory and motor functions, angler fish have a more simplified nervous system that is geared towards catching prey and survival in their underwater environment. Another difference is the size of the nervous system relative to body size - humans have a larger brain-to-body ratio compared to angler fish, which have a smaller brain in proportion to their overall body mass.

One similarity between the two species is the presence of basic neural structures such as neurons, which are essential for transmitting electrical impulses and facilitating communication in the nervous system. Additionally, both humans and angler fish have sensory organs that enable them to perceive their surroundings and respond to stimuli, although the sophistication of these sensory systems may differ between the two species. Another similarity is the role of the nervous system in regulating bodily functions and behaviors, such as movement, feeding, and reproduction.

Overall, while the human nervous system is more complex and sophisticated compared to that of an angler fish, both species share fundamental similarities in terms of neural structures and functions. The differences in neural complexity and size between humans and angler fish reflect their respective evolutionary adaptations to different ecological niches and survival strategies.

(put into short answer

The human nervous system is more complex and larger relative to body size compared to that of an angler fish. Both species have basic neural structures and sensory organs, and the nervous system plays a vital role in regulating bodily functions and behaviors in both humans and angler fish.