Morphology Data of Cottus schitsuumsh
Identification keys
Main Ref. Lemoine, M., M.K. Young, K.S. Mckelvey, L. Eby, K.L. Pilgrim and M.K. Schwartz, 2014
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Mottling is variable and consists of at least two forms: 1. One form with black-brown mottling on a brown-olive background mainly above the lateral line that stops under the soft dorsal fin; weak saddling is occasionally present; and pectoral fins with faint black-brown contours running vertically. 2. The other form lacks mottling or spotting over the body and the background color can be light brown, rust orange, or yellow. Both types have a dark blotchy marking near the base of the caudal rays and the first dorsal fin is generally dorsally darkened (Ref. 94998).

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

Distinguished from all congeners in the upper Columbia River basin by the lack of a second preopercular spine, palatine tooth patches smaller and separate from the vomerine tooth patch, and axillary prickling. Differs from Cottus cognatus, C. confusus , C. hubbsi, and C. rhotheus by the absence of a second preopercular spine; and from C. cf. bairdii and C. beldingii by the presence of axillary prickling. Furthermore, this species possesses palatine tooth patches smaller than the vomerine tooth patch and the patches are separated (vs. palatine tooth patches equal to or larger in size than the vomerine tooth patch in Cottus cf. bairdii; and generally, palatine teeth absent in Cottus beldingii) (Ref. 94998).

Ease of Identification

Meristic characteristics of Cottus schitsuumsh

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Attributes no striking attributes
Fins number
Finlets No. Dorsal   
Spines total 7 - 9
Soft-rays total 17 - 20
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number
Spines total
Soft-rays total 13 - 15

Paired fins

Pectoral Attributes  
Soft-rays   13 - 14
Pelvics Attributes  
Position    abdominal  behind origin of D1
Soft-rays   3 - 4
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17