Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Temperate
Europe: streams of Rhine and Meuse drainages, in Rhine extending upriver (southwards) to about Mannheim, including tributaries of River Main and Neckar in Germany.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 10.0 cm SL male/unsexed; (Ref. 89113)
Short description
Identification keys | Morphology | Morphometrics
Anal soft rays: 11 - 14. Differs from other species of Cottus in North Sea basin by the combination of the following characters, none of them unique: no distinct transverse bands on pelvic fin; prickling on body absent or only under pectoral fin; base of first dorsal fin with faint black blotches at anterior and posterior extremities; depth of caudal peduncle 26-31% HL; lateral line complete; and unique molecular markers (Ref. 55856).
Body shape (shape guide): elongated.
Inhabits small, cold streams with gravel bottom (Ref. 59043).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Keith, P., H. Persat, E. Feunteun and J. Allardi, 2011. Les poissons d'eau douce de France. Biotope, Mèze; Muséum national d'Histoire naturelle, Paris (collection Inventaires et biodiversité), 552 p. (Ref. 89113)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
Special reports
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00832 (0.00340 - 0.02033), b=3.16 (2.98 - 3.34), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
3.3 ±0.4 se; based on size and trophs of closest relatives |
Resilience (Ref. 120179) |
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.). |
Fishing Vulnerability (Ref. 59153) |
Low to moderate vulnerability (34 of 100). 🛈 |