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Baikal yellowfin (Cottocomephorus grewingkii) — Cottocomephoridae

Baikal yellowfin

Cottocomephorus grewingkii
LC · Least Concern

The Baikal yellowfin (Cottocomephorus grewingkii) is a freshwater fish of the family Cottocomephoridae that grows up to 19 cm.

Length
19 cm
Water
Freshwater
Depth
20.0–300.0 m
Diet
Carnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Open water
Danger
Harmless
Range
Endemic to Lake Baikal in Siberia, where it lives semi-pelagically in open water and near rocky shores.
Edibility
Commonly eaten

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Description

The Baikal yellowfin is a slender, semi-pelagic sculpin of the family Cottocomephoridae reaching about 19 cm and endemic to Lake Baikal. Unlike most sculpins, which live on the bottom, this species swims freely in the open water; the brownish body has large pectoral fins and yellowish fins, to which the name refers. It lives semi-pelagically in the deep lake and near rocky shores and feeds on zooplankton, mainly amphipods, and on fish larvae. In spring it moves to shallow, rocky shores to spawn, where the male guards the clutch laid on stones. The Baikal yellowfin forms an important link in the lake's food web and is prey for the Baikal seal and for commercial fish.

Frequently asked questions

How do you recognise the Baikal yellowfin?

The Baikal yellowfin has an elongate, eel-like body, is mainly brown and shows a plain pattern. Slender, semi-pelagic sculpin from Lake Baikal with large pectoral fins and yellowish fins; swims freely in open water.

Where does the Baikal yellowfin live?

The Baikal yellowfin lives in fresh water and is mostly found around open water. Endemic to Lake Baikal in Siberia, where it lives semi-pelagically in open water and near rocky shores.

How big does the Baikal yellowfin get?

The Baikal yellowfin grows to a maximum of about 19 cm.

Is the Baikal yellowfin dangerous to humans?

No, the Baikal yellowfin is harmless to humans. None required: this species is harmless to humans.

Is the Baikal yellowfin edible?

Yes, the Baikal yellowfin is commonly eaten.

More photos

Baikal yellowfin (Cottocomephorus grewingkii) — Cottocomephoridae — 2
iNaturalist ((c) Aleksandr Novikov, some rights reserved (CC BY-NC))
Baikal yellowfin (Cottocomephorus grewingkii) — Cottocomephoridae — 3
Aleksandr Novikov (CC BY-NC 4.0) via GBIF — iNaturalist
Baikal yellowfin (Cottocomephorus grewingkii) — Cottocomephoridae — 4
Wikimedia Commons — Лев Семёнович (Симонович) Берг (2 (14) марта 1876 — 24 декабря 1950) (Public domain)
Fin

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All data

Identification

English name
Baikal yellowfin verified
Scientific name
Cottocomephorus grewingkii
Family
Cottocomephoridae
Other names
Baikal yellowfin; Blackmane; Yellow-fin Baikal sculpin; Yellowmane; Yellowwing verified

Appearance

Size class
Medium verified
Max length (cm)
19.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown sourced
Pattern
Plain sourced
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No verified
Dorsal fins
Two separate sourced
Dorsal spines
Yes verified

Habitat & distribution

Water type
Freshwater verified
Substrate
Open water verified
Min depth (m)
20.0 verified
Max depth (m)
300.0 verified
Natural range
Endemic to Lake Baikal in Siberia, where it lives semi-pelagically in open water and near rocky shores. verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Diet (detail)
Zooplankton (amphipods) and fish larvae sourced
Social behaviour
Schooling verified
Territorial
No verified
Activity
Diurnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
Yes verified
Seasonality
Migrates to shallow, rocky banks in spring to spawn; the male guards the clutch laid on stones. sourced
Special features
Slender, semi-pelagic sculpin from Lake Baikal with large pectoral fins and yellowish fins; swims freely in open water. sourced

For anglers

Edibility
Commonly eaten verified
Fishing method
Angling with lures or (dead/live) baitfish by trolling, casting or drift fishing in open water. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
None required: this species is harmless to humans. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Cottocomephorus

More from the family Cottocomephoridae

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