mormyrids การใช้

They are mostly found on weakly electric fishes such as gymnotiforms and mormyrids.
Mormyrids have ampullary ducts distributed on the head as well as along the top and bottom of their body.
The retina of their eyes is called a " grouped retina ", a type of eye structure seen in mormyrids and a few other fish.
To classify types of electroreceptors, the first differentiation point should be made between ampullary and tuberous organs, which exist in both mormyrids and gymnotiforms.
However, some fish have relatively large brains, most notably mormyrids and sharks, which have brains about as massive relative to body weight as birds and marsupials.