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The scientific name of the Arctic grayling is Thymallus arcticus.It was named in 1776 by German zoologist Peter Simon Pallas from specimens collected in Russia. The name of the genus Thymallus first given to grayling (T. thymallus) described in the 1758 edition of Systema Naturae by Swedish zoologist Carl Linnaeus originates from the faint smell of the herb thyme, which emanates from the flesh.
The Montana Arctic grayling (Thymallus arcticus montanus) is a North American freshwater fish in the salmon family Salmonidae.The Montana Arctic grayling, native to the upper Missouri River basin in Montana and Wyoming, is a disjunct population or subspecies of the more widespread Arctic grayling (Thymallus arcticus). [5]
The Mongolian grayling is omnivorous and lives predatorily at certain times of the year. During the summer months, it inhabits mountain rivers and lakes at all depths. [8] In autumn and winter, it forms large shoals in front of the estuaries in lakes before spawning. It can only reproduce in cold, oxygen-rich water below temperatures of 20°C.
The grayling grows to a maximum recorded length of 60 cm (24 in) and a maximum recorded weight of 6.7 kg (15 lb). Of typical Thymallus appearance, the grayling proper is distinguished from the similar Arctic grayling (T. arcticus arcticus) by the presence of 5–8 dorsal and 3–4 anal spines, which are absent in the other species; T. thymallus also has a smaller number of soft rays in these fins.
NOAA's 2024-25 winter forecast maps show what to expect in Oklahoma ... This period usually happens every 3 to 5 years but can also pop up on occasion. ... Ryan Reynolds' losing 'image war ...
Grebe Lake used to hold both lacustrine arctic grayling and rainbow trout. In 2017, the NPS embarked on a three-year fish restoration project in the upper Gibbon river watershed to remove all non-native trout and grayling. Grebe lake and its tributaries were poisoned with rotenone in the summer of 2017 to remove the grayling and rainbow trout.
NOAA has released its seasonal outlook for the 2024-25 winter months, which predicts the U.S. will slowly transition into a La Niña pattern. ... Maps show NOAA's winter outlook.
Australian grayling spawn following movements to the lower freshwater reaches of coastal rivers. Spawning is thought to occur in late autumn or early winter. McDowall (1996) reports that egg counts range from 25,000 to 67,000 in females 170–200 mm long, and that the small (~1 mm) demersal eggs probably settle among gravel and cobble in the river bed before hatching.