Hucho ishikawae

from Wikipedia, the free encyclopedia
Hucho ishikawae
Systematics
Cohort : Euteleosteomorpha
Order : Salmonid fish (Salmoniformes)
Family : Salmon fish (Salmonidae)
Subfamily : Salmoninae
Genre : Hucho
Type : Hucho ishikawae
Scientific name
Hucho ishikawae
Mori , 1928

Hucho ishikawae , the Korean Taimen, is a species of salmonid fish found in the border region between North Korea and China, including the Am-nok , Dok-ro, Weon-ju, and Jang-jin rivers. Monitoring this species is very difficult because of the lack of access to the areas where it is found, which is why it is classified as low-databy the IUCN . It occurs in flowing waters and in the benthopelagial of the sea bay and reaches a length of up to 50 cm.

features

The fish, up to 50 cm long, is characterized by irregularly scattered points on the front half of the body. In the area of ​​the dorsal fin it has a large dark spot on both sides at the level of the lateral line organ. The adipose and anal fin are pronounced, the caudal fin is relatively small. The mouth is slightly below, with the upper jaw reaching behind the large eye.

Distribution and habitats

Presumed distribution area of Hucho ishikawae

Hucho ishikawae occurs in the border region between North Korea and China including the Am-nok , Dok-ro, Weon-ju and Jang-jin rivers . The habitat thus extends from freshwater flowing waters to the benthopelagial of the sea bay containing salt.

In rivers it was found near the ground in clear water of pools below waterfalls and rapids.

Systematics

In addition to the Hucho ishikawae , three other species belong to the genus Hucho : Hucho Hucho , Hucho bleekeri , and the Taimen ( Hucho taimen ). These three species occur in Europe (Danube catchment area), China and Russia.

Within the salmon fish, the genus Hucho belongs to the subfamily Salmoninae and within this subfamily, together with its purely East Asian sister genus Brachymystax, it forms a systematic unit ( clade ) which is opposite to the other Salmoninae genera ( Oncorhynchus , Parahucho , Salmo , Salvelinus , Salvethymus ).

Individual evidence

  1. ↑ Chyung, M.-K., 1977. The fishes of Korea. Il Ji Sa Publishing Co. Seoul, Korea. 727 p.
  2. ↑ a b Rand, PS 2012. Hucho ishikawae . IUCN Red List
  3. ↑ a b c d Hucho ishikawae FishBase , 2014
  4. ↑ Hucho on Fishbase.org (English)
  5. ↑ Alexis Crête-Lafrenière, Laura K. Weir, Louis Bernatchez: Framing the Salmonidae Family Phylogenetic Portrait: A More Complete Picture from Increased Taxon Sampling. PLOS ONE , 2012, 7 (10): e46662. DOI: 10.1371 / journal.pone.0046662
  6. ↑ SV Shedko, IL Miroshnichenko, GA Nemkova: Phylogeny of salmonids (Salmoniformes: Salmonidae) and its molecular dating: Analysis of mtDNA data. Russian Journal of Genetics, June 2013, Volume 49, Issue 6, Pages 623-637. DOI: 10.1134 / S1022795413060112