The "'shortlip electric ray "', " Narcine brevilabiata " is a species of electric ray in the numbfish family, Narcinidae.
32.
In the Mediterranean Sea, it remains the most common electric ray and in some areas may be increasing in number.
33.
The embryo's pectoral fins enlarge and fuse with the snout at a length of, giving it the typical circular electric ray shape.
34.
Various coastal demersal fisheries take the marbled electric ray as bycatch; captured rays are usually discarded as they have little commercial value.
35.
Nachmansohn obtained very active solutions of acetylcholinesterase from the electric organ of the marbled electric ray ( " Electrophorus electricus " ).
36.
Nocturnal and solitary, the marbled electric ray can often be found lying the sea floor buried except for its eyes and spiracles.
37.
Solitary and nocturnal, the Pacific electric ray can generate up to 45 volts of electricity for the purposes of subduing prey or self-defense.
38.
Synaptosomes can also be isolated from tissues other than brain such as spinal cord, retina, myenteric plexus or the electric ray electric organ.
39.
Though the Pacific electric ray will feed at any hour, it responds to prey much more quickly at night than during the day.
40.
Known parasites of the giant electric ray include the tapeworms " Acanthobothrium franus " and " artisanal ray fishery in the Gulf of California.