Thymallus baicalensis
Thymallus baicalensis, also known as the Baikal black grayling, is a Siberian freshwater fish species in the salmon family Salmonidae. 

"Thymallus baicalensis" occurs in Lake Baikal, in the inflowing Selenga River and throughout the major Enisei River drainage, and also some eastern tributaries of the Ob River.

It was previously considered a subspecies of the Arctic grayling, "Thymallus arcticus baicalensis", but currently one of several distinct Siberian and East Asian grayling species, the closest of which are "Thymallys nikolskyi, T. svetovidovi, T. brevicephalus " and "T. brevirostris". The distinction of these taxa is supported by the phylogeny of their mitochondrial DNA lineages. "T. baicalensis" is also characterized by a distinct dorsal-fin colouration pattern.

The Baikal grayling can grow up to a length 38 cm and 1.2 kg weight. It mainly moves along stony bottoms at shallow depths, feeding on caddisfly and stonefly larvae, amphipod crustaceans and fish eggs.
Q1072742
freshwater fish
Concept
Q35409
family
Concept
Q184238
Salmonidae
Concept
Q5513
Lake Baikal
LOC
Q75745
Selenga River
LOC
Q78707
Enisei River
LOC
Q973
Ob River
LOC
Q81014
Arctic grayling
Concept
None
Thymallys nikolskyi
UNK
Q27075
mitochondrial DNA
MISC
Q184616
caddisfly
Concept
Q203547
stonefly
Concept
Q193418
amphipod
Concept
Q3768305
Thymallus baicalensis
Concept
Q3768305
Thymallus baicalensis
Concept
+38^^http://www.w3.org/2001/XMLSchema#decimal
38
NUMBER
+1.2^^http://www.w3.org/2001/XMLSchema#decimal
1.2
NUMBER
taxon rank
inflows
mouth of the watercourse