cyanellus_ | 3.4 | .8 | 6.6 | 5.2 | 1.8 | 30.5 _L. humilis_ | 10.6 | 13.1 | 1.8 | 31.4 | 17.7 | 14.8 _L. megalotis_ | 12.4 | 22.3 | 12.0 | 3.6 | 14.0 | 1.7 _L. macrochirus_ | .3 | | | .2 | 1.3 | _A. grunniens_ | .1 | | | | | _L. sicculus_ | 7.1 | 1.6 | .4 | 7.7 | 10.2 | -------------------------------------------------------------------- _Big Caney River_ The "lower segment" of Big Caney River is immediately upstream from Hulah Reservoir, and is not the lowermost portion of the entire river basin, but merely the lower part of the river in the area studied. A conspicuous characteristic of the lower segment was the general restriction of the deep-bodied suckers and the carp to this part of the stream. Other fishes that were most common in the lower section were _Pimephales vigilax_, _Percina phoxocephala_, _Gambusia affinis_, and _Aplodinotus grunniens_. _Labidesthes sicculus_ and _Lepisosteus osseus_ ranged into the middle section of the stream, but were present in larger numbers downstream. _Ictalurus punctatus_, _Pomoxis annularis_, and _Lepomis macrochirus_ were taken chiefly in downstream habitats; however, stocking has confused the distributional pattern of these species. _Notropis lutrensis_, although found throughout the system, progressively declined in numbers taken in the middle and upper sections. Approximately 18 species were usually taken in downstream collections. No species were found exclusively in the middle section of the Big Caney system. _Micropterus punctulatus_, _Notropis umbratilis_, and _Lepomis megalotis_ tended to be most common in the middle section of the main stream. These three species were taken together at stations C-5, C-6, C-8, and C-10. The upper section yielded no species that did not occur also in another section. Fishes most abundant in the upper section included: _Campostoma anomalum_, _Etheostoma spectabile_, _Notropis boops_, _Notropis rubellus_, _Pimephales notatus_, and _Lepomis cyanellus_. _Ictalurus natalis_ also seemed more common upstream than in lower parts of the basin. _Campostoma anomalum_ was one of the most common fishes taken at many of the stations on small upland tributaries. In downstream collections its relative abundance was less, although it was often concentrated on riffles. In the Big Caney system as a whole _Notropis umbratilis_ was the most abundant species. Several species were present throughout the system in proportions varying, sometimes greatly, from station to station. _Lepomis megalotis_ and _Lepomis humilis_ were erratic in occurrence, and the numbers of _Notropis camurus_ and _Ictalurus melas_ varied without pattern. _Grouse Creek_