Current status of Notropis buccula
and Notropis oxyrhynchus in Texas.
almost as long as distance between buccula
and pronotum (Fig.
Notropis buccula and Hybognathus placitus comprised less than 1% of the fish assemblage following impoundment of Lake Alan Henry.
Results of this study suggest that Hybognathus placitus has become extirpated from the Double Mountain Fork upstream from Lake Alan Henry and that Notropis buccula either has, or soon will, experience a similar fate.
Both Notropis buccula and Hybognathus placitus are obligate riverine species.
Notropis buccula is endemic to, and historically was widespread throughout, the Brazos River drainage (Cross 1953; Hubbs et al.
Eyes, maxillary plate and buccula
apex, labium, and spot on frons dull black.
COLORATION: Similar to males, differing as follows: Head: Brown, more fuscous along frontal sutures and undersurface, buccula
pale brownish yellow; eyes dark brown, tinged with red along margins.
Head: vertex pale with brown dots, transverse fascia orange; base of clypeus and mandibular plate with dark brown transverse band; maxillary plate brownish or orange; mandibular plate brownish and orange sometimes with whitish dorsal portion; clypeus pale with brown marks, distally with transverse brown band; gena suffused with reddish brown; buccula whitish; gula dark reddish brown; antennal segments as in generic description; labium as in generic description.
Head: vertex pale with sparse brown or reddish dots, transverse fascia sometimes distinct, then pale brown; mandibular and maxillary plates suffused with orange, dorsal portion of mandibular plate whitish; clypeus pale sometimes with brown or reddish dots, distally suffused with brown; gena pale brown or orange; buccula whitish; gula pale or suffused with pale brown; antennal segments and labium as in generic description.
Head: vertex and clypeus pale with pale brown or reddish dots, clypeus distally with transverse brown band; mandibular and maxillary plates tinged with pale brown or orange, dorsal portion of mandibular plate usually with white spot; gena pale brown; buccula whitish; gula pale brown; antennal segments and labium as in generic description.