noun
smallmouth bass
Refers specifically to the fish species Micropterus dolomieu, known in English as smallmouth bass.
コクチバスは北米原産の淡水魚です。
The smallmouth bass is a freshwater fish native to North America.
ブラックバス is a broader term for black bass, which includes both largemouth and smallmouth bass. コクチバス specifically refers to the smallmouth bass.
From English 'smallmouth bass', with コクチ representing 'smallmouth' (小口) and バス from 'bass'.