0_Wizard
I found it surprising that some shellfish are found in freshwater.
Although most kinds of shellfish are harvested from saltwater environments, some kinds are found in freshwater.
chosen_Shellfish_0
Shellfish
chosen_topic_0_Shellfish
Shellfish Association of Great Britain
The Shellfish Association of Great Britain (SAGB) is a historic association that was founded as the Oyster Merchants’ and Planters’ Association in 1903, it was renamed the SAGB in 1969. They cover a wide range of topics within the shellfish industry, from trading to advice on nutritional standards and also the sustainability of the industry. The SAGB is the Shellfish industry’s trade body with the director and staff based at Fishmongers’ Hall which is also home to the Worshipful Company of Fishmongers and can be found in the City of London. The SAGB consists of a wide range of members located within the Shellfish farming and fishing industry, within commercial companies and traders of Shellfish products, the Seafish Industry Authority and the major Sea Fisheries Committees.
Bivalvia
Bivalvia, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. Bivalves as a group have no head and they lack some usual molluscan organs like the radula and the odontophore. They include the clams, oysters, cockles, mussels, scallops, and numerous other families that live in saltwater, as well as a number of families that live in freshwater. The majority are filter feeders. The gills have evolved into ctenidia, specialised organs for feeding and breathing.
Shellfish
Shellfish is a culinary and fisheries term for exoskeleton-bearing aquatic invertebrates used as food, including various species of molluscs, crustaceans, and echinoderms. Although most kinds of shellfish are harvested from saltwater environments, some kinds are found in freshwater. In addition, a few species of land crabs are eaten, for example "Cardisoma guanhumi" in the Caribbean. Despite the name, shellfish are not a kind of fish, but are simply water-dwelling animals. Many varieties of shellfish (crustaceans in particular) are actually closely related to insects and arachnids, making up one of the main classes of the phylum Arthropoda.
Harmful algal bloom
A harmful algal bloom (HAB) are organisms that can severely lower oxygen levels in natural waters, killing marine life. Some HABs are associated with algae-produced toxins. Blooms can last from a few days to many months. After the bloom dies, the microbes which decompose the dead algae use up even more of the oxygen, which can create fish die-offs. When these zones of depleted oxygen cover a large area for an extended period of time, they are referred to as dead zones, where neither fish nor plants are able to survive. HABs are induced by an overabundance of nutrients in the water. The two most common nutrients are fixed nitrogen (nitrates, ammonia, urea) and phosphate.
Effects of global warming on human health
The effects of global warming include its gayon human health. The observed and projected increased frequency and severity of climate related impacts will further exacerbate the effects on human health. This article describes some of those effects on individuals and populations. A good example of the impact of global warming on health can be seen in the disease Erythromelalgia. This is a vascular disease that is commonly triggered by the involvement of change in temperature, which leads to syndromes including (first and second degree) burning pain, increased temperature, erythema and swelling, of mainly the hands and feet that are affected.
Mussel
Mussel is the common name used for members of several families of bivalve molluscs, from saltwater and freshwater habitats. These groups have in common a shell whose outline is elongated and asymmetrical compared with other edible clams, which are often more or less rounded or oval. The word "mussel" is most frequently used to mean the edible bivalves of the marine family Mytilidae, most of which live on exposed shores in the intertidal zone, attached by means of their strong byssal threads ("beard") to a firm substrate. A few species (in the genus "Bathymodiolus") have colonised hydrothermal vents associated with deep ocean ridges.
Fish as food
Many species of fish are consumed as food in virtually all regions around the world. Fish has been an important source of protein and other nutrients for humans from time immemorial. In culinary and fishery contexts, "fish" may include shellfish, such as molluscs, crustaceans and echinoderms. English does not distinguish between "fish" as an animal and the food prepared from it, as it does with "pig" vs. "pork" or "cow" vs. "beef". Some other languages do, as in the Spanish " versus ". The modern English word for fish comes from the Old English word "fisc" (plural: "fiscas") which was pronounced as it is today.
1_Apprentice
I have heard of freshwater pearls, so I'm not so surprised.  How many kinds are there?
0_Wizard
I am not sure as to the number but I do know that some crustaceans that are enjoyed by diners are lobster, shrimp, and crabs.
Some crustaceans commonly eaten are shrimp, lobsters, crayfish, and crabs.
chosen_Shellfish_0
Shellfish
chosen_topic_0_Shellfish
Pain in crustaceans
The question of whether crustaceans experience pain is a matter of scientific debate. Pain is a complex mental state, with a distinct perceptual quality but also associated with suffering, which is an emotional state. Because of this complexity, the presence of pain in an animal, or another human for that matter, cannot be determined unambiguously using observational methods, but the conclusion that animals experience pain is often inferred on the basis of likely presence of phenomenal consciousness which is deduced from comparative brain physiology as well as physical and behavioural reactions.
Shrimp
The term shrimp is used to refer to some decapod crustaceans, although the exact animals covered can vary. Used broadly, it may cover any of the groups with elongated bodies and a primarily swimming mode of locomotion – most commonly Caridea and Dendrobranchiata. In some fields, however, the term is used more narrowly, and may be restricted to Caridea, to smaller species of either group, or to only the marine species. Under the broader definition, "shrimp" may be synonymous with prawn, covering stalk-eyed swimming crustaceans with long narrow muscular tails (abdomens), long whiskers (antennae), and slender legs.
Cuisine of the United States
The cuisine of the United States reflects its history. The European colonization of the Americas yielded the introduction of a number of ingredients and cooking styles to the latter. The various styles continued expanding well into the 19th and 20th centuries, proportional to the influx of immigrants from many different nations; such influx developed a rich diversity in food preparation throughout the country. Early Native Americans utilized a number of cooking methods in early American Cuisine that have been blended with early European cooking methods to form the basis of American Cuisine. When the colonists came to the colonies, they farmed animals for clothing and meat in a similar fashion to what they had done in Europe.
Crustacean larva
Crustaceans may pass through a number of larval and immature stages between hatching from their eggs and reaching their adult form. Each of the stages is separated by a moult, in which the hard exoskeleton is shed to allow the animal to grow. The larvae of crustaceans often bear little resemblance to the adult, and there are still cases where it is not known what larvae will grow into what adults. This is especially true of crustaceans which live as benthic adults (on the sea bed), more so than where the larvae are planktonic and therefore more easily caught. Many crustacean larvae were not immediately recognised as larvae when they were discovered, and were described as new genera and species.
Crustacean
Crustaceans (Crustacea ) form a large, diverse arthropod taxon which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill, woodlice, and barnacles. The crustacean group is usually treated as a subphylum, and thanks to recent molecular studies it is now well accepted that the crustacean group is paraphyletic, and comprises all animals in the Pancrustacea clade other than hexapods. Some crustaceans are more closely related to insects and other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from "Stygotantulus stocki" at , to the Japanese spider crab with a leg span of up to and a mass of .
Hematodinium
Hematodinium is a genus of dinoflagellates. Species in this genus, such as "Hematodinium perezi", the type species, are internal parasites of the hemolymph of crustaceans such as the Atlantic blue crab ("Callinectes sapidus") and Norway lobster ("Nephrops norvegicus"). Species in the genus are economically damaging to commercial crab fisheries, including causing bitter crab disease in the large Tanner or snow crab fisheries of the Bering Sea. Introduction  "Hematodinium" is a harmful parasitic dinoflagellate in marine decapod crustaceans, often dwelling in the hemolymph of host organisms . Drastic changes in the host’s vital organs, tissues, and hemolymph lead to the degeneration of the organism .
Lobster
Lobsters comprise a family (Nephropidae, sometimes also Homaridae) of large marine crustaceans. Lobsters have long bodies with muscular tails, and live in crevices or burrows on the sea floor. Three of their five pairs of legs have claws, including the first pair, which are usually much larger than the others. Highly prized as seafood, lobsters are economically important, and are often one of the most profitable commodities in coastal areas they populate. Commercially important species include two species of "Homarus" (which looks more like the stereotypical lobster) from the northern Atlantic Ocean, and scampi (which looks more like a shrimp, or a "mini lobster") – the Northern Hemisphere genus "Nephrops" and the Southern Hemisphere genus "Metanephrops".