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However, the disease can also develop without the fish showing any external signs of illness, the fish maintain a normal appetite, and then they suddenly die. The disease can progress slowly throughout an infected farm and, in the worst cases, death rates may approach 100 per cent. It is also a threat to the dwindling stocks of wild salmon.
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Argulus foliaceus. Argulus foliaceus, also known as the common fish louse, is a species of fish lice in the family Argulidae. [1] It is "the most common and widespread native argulid in the Palaearctic" [2] and "one of the most widespread crustacean ectoparasites of freshwater fish in the world", considering its distribution and range of hosts. [3]
Skin: Ich infections are usually visible as one or several characteristic white spots on the body or fins of the fish. The white spots are single cells called trophonts, which feed on host cells (epidermal cells and leukocytes attracted to the site) and may grow to 1 mm in diameter.
The tricolored blackbird breeds in large colonies such as this one in western Antelope Valley, California. By 1991, the tricolor blackbird's breeding population had fallen to approximately thirty-five thousand adults. This prompted a petition submitted by the Yolo chapter of the National Audubon Society to the California Fish and Game ...
A fieldfare, a member of the thrush family native to Europe, is photographed in Sweden. The first documented sighting of the species in Wisconsin was recorded Feb. 14 in Ashland.
The use of this particular animal's skin is 'unprecedented,' according to one professor involved with the research. Brazilian doctors use fish skin to treat burn victims Skip to main content
Swainson's thrush: Catharus ustulatus (Nuttall, 1840) 38 Black-billed nightingale-thrush: Catharus gracilirostris Salvin, 1865: 39 Hermit thrush: Catharus guttatus (Pallas, 1811) 40 Russet nightingale-thrush: Catharus occidentalis Sclater, PL, 1859: 41 Ruddy-capped nightingale-thrush: Catharus frantzii Cabanis, 1861: 42 Grey-cheeked thrush