Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† gōbĭus (also cōb-), ii, and gōbio, ōnis, m., = κωβιός, a fish of small value, the gudgeon, Ov. Hal. 128; Plin. 9, 57, 83, § 175; Mart. 13, 88; Juv. 11, 37; Aus. Idyll. 10, 131; form cobio, Plin. 32, 11, 53, § 146.