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The following list of known freshwater fish species, subspecies, and hybrids occurring in Washington state is taken from Wydoski and Whitney(2003). Some scientific names have been updated or corrected. Trout nomenclature follows Behnke et al.(2002). Asterisks denote introduced fishes.
Distinctively, these fish have no jaws. [15] Cartilaginous fish such as sharks also have simple, and presumably primitive, skull structures. The cranium is a single structure forming a case around the brain, enclosing the lower surface and the sides, but always at least partially open at the top as a large fontanelle.
In 2023, several lancetfish have washed up on the coastline of beaches of Oregon. While the fish tend to live in tropical or subtropical water, they often need to travel to Alaska's Bering Sea to find food. Beach-goers that see the fish have been requested to take a photo and tag the NOAA Fisheries West Coast region. [13]
The liver is composed of three lobes: one small lobe (includes the gall bladder) and two large lobes. Perch have long and narrow kidneys that contain clusters of nephrons which empty into the mesonephric duct. [9] They have a two-chambered heart consisting of four compartments: the sinus venous, one atrium, one ventricle, and conus. [10]
The Washington Department of Fish and Wildlife and Oregon Department of Fish and Wildlife, meanwhile, prohibited retention of yelloweye rockfish caught by recreational fisheries. Commercial retention of the rockfish is prohibited except for a small 300 lb (136 kg) limit, to allow yelloweye caught dead to be retained. [ 10 ]
The bowfin (Amia calva) is a ray-finned fish native to North America. Common names include mudfish, mud pike, dogfish, grindle, grinnel, swamp trout, and choupique.It is regarded as a relict, being one of only two surviving species of the Halecomorphi, a group of fish that first appeared during the Early Triassic, around 250 million years ago.
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Fish bone is any bony tissue in a fish, although in common usage the term refers specifically to delicate parts of the non-vertebral skeleton of such as ribs, fin spines and intramuscular bones. Not all fish have fish bones in this sense; for instance, eels and anglerfish do not possess bones other than the cranium and the vertebrae.