Fish gill: Most fish exchange gases using gills on either side of the pharynx (throat). Gills are tissues which consist of cloth and fabric structures called filaments.European Community Reference Laboratory for Fish Diseases: The European Community Reference Laboratory for Fish DiseasesCommunity Reference Laboratory for Fish Diseases is located in Frederiksberg in Denmark at the National Veterinary Institute (a part of Technical University of Denmark).Razor strop: A razor strop (or razor strap) is a flexible strip of leather or canvas used to straighten and polish the blade of a straight razor, a knife, or a woodworking tool like a chisel. Unlike honing or sharpening a blade, in which a whetstone removes metal bent out of alignment from the blade's edge, stropping the blade re-aligns the indentations without removing any material.Southern California Steelhead DPS: The Southern California Steelhead Distinct Population Segment (DPS) occurs from the Santa Maria River to the Tijuana River at the United States and Mexican Border in seasonally accessible rivers and streams.*NOAA.Paramoeba: Paramoeba is a genus of common parasites, including species that can cause infection in fish, crabs (including the "blue crab", Callinectes sapidus), sea urchins and others.Kudoa thyrsites: Kudoa thyrsites is a myxosporean parasite of marine fishes. It has a worldwide distribution, and infects a wide range of host species.Deep chlorophyll maximum: A deep chlorophyll maximum (DCM) is a subsurface maximum in the concentration of chlorophyll in the ocean or a lake. A DCM is not always present--sometimes there is more chlorophyll at the surface than at any greater depth--but it is a common feature of most aquatic ecosystems.Bulloo-Bancannia drainage basin: The Bulloo-Bancannia drainage basin is a drainage basin that covers part of western Queensland and New South Wales. It is adjacent to the much larger Lake Eyre basin.Baltic sculpin: The Baltic sculpinBaltic sculpin (Cottus microstomus) at EOL (Cottus microstomus) is a species of sculpin, a European freshwater fish in the Cottidae family. It is widespread in the Dniester drainage (Black Sea basin), Odra and Vistula drainages (southern Baltic basin), most likely extending further east to Gulf of Finland.Fundulus olivaceus: Fundulus olivaceus is a species of fish in the family Fundulidae, the topminnows and North American killifishes. It is known by the common name blackspotted topminnow.Acclimatization: Acclimatization (UK also acclimatisation; US also acclimation) is the process in which an individual organism adjusts to a gradual change in its environment (such as a change in temperature, humidity, photoperiod, or pH), allowing it to maintain performance across a range of environmental conditions. Acclimation occurs in a short period of time (days to weeks), and within the organism's lifetime (compare to adaptation).Osmoregulation: Osmoregulation is the active regulation of the osmotic pressure of an organism's fluids to maintain the homeostasis of the organism's water content; that is, it keeps the organism's fluids from becoming too diluted or too concentrated. Osmotic pressure is a measure of the tendency of water to move into one solution from another by osmosis.Prittle Brook: The Prittle Brook is a minor watercourse in Essex, England. A short tributary of the River Roach, the brook rises near Thundersley and discharges into the Roach at Rochford.Dog Island, Anguilla: Dog Island is an uninhabitated small island of in size located approximately to the north-west of Anguilla.Dog Island: A Seabird’s (and Seabirders’) Paradise, Anguilla News, Retrieved October 18, 2010Two St.Aquaculture of sea sponges: Sea sponge aquaculture is the process of farming sea sponges under controlled conditions. It has been conducted in the world's oceans for centuries using a number of aquaculture techniques.