|_7.5_| |_3_ | _3_ |_12.0_| _1_| _2_| _3.6_ -------------------+-----+-----+----+-----+------+----+------+-------- Long-eared Sunfish | ... | ... |... | ... | .5 | ...| 6 | 4.3 | | | | | | | | _.7_ -------------------+-----+-----+----+-----+------+----+------+-------- Orange-spotted | 4.5 | --- | 2 | 3 | 2.5 | ...| 12 | 12.0 Sunfish |_6_ | |_4_ | | | | _5_| _5.0_ -------------------+-----+-----+----+-----+------+----+------+-------- Bluegill | 1.5 | 1 |... | 6 | 3.5 | 1 | 1 | .3 | | | | _1_ | | | | _.3_ -------------------+-----+-----+----+-----+------+----+------+-------- White Crappie | ... | ... | 4 | 4 | ... | ...| ... | ... | | |_7_ | | | | | -------------------+-----+-----+----+-----+------+----+------+-------- Logperch | ... | ... |... | ... | ... | ...| 1 | .3 | | | | | | | | _.7_ -------------------+-----+-----+----+-----+------+----+------+-------- Slender-headed | --- | 13 |... | 2 | 6.5 | 3 | 1 | 8.3 Darter | | | | |_15.0_| _1_| | _3.0_ -------------------+-----+-----+----+-----+------+----+------+-------- Orange-throated | --- | 7 |... | ... | ... | ...| 1 | --- Darter | | | | | | | | -------------------+-----+-----+----+-----+------+----+------+-------- Seining units | 2/3 | 1 | 1 | 1 | 2 | 1 | 1 | 3 -------------------+-----+-----+----+-----+------+----+------+-------- FISH-FAUNA OF THE UPPER NEOSHO RIVER Collections at the upper Neosho station were more intensive than at any other station, especially in 1959. Rotenone was used in the summers of 1957, 1958 and 1959, to obtain large samples of the population in one section of the stream. In September, 1959, the shocker was used in other sections in order to estimate populations in particular pools and riffles, to measure variability in the fauna between areas having slightly different habitat, and to record movement of marked individuals in a short section of the stream. Description of Study-areas Two sections of the stream, each about one-half mile long (See p. 366), were studied. Additional description of particular areas is presented below. Area 1 and the pools in which rotenone was used are on the Bosch Farm approximately two miles upstream from the White Farm where Areas 2, 3, 4, 5, 6 and 7 are situated. Area 1 has a length of 210 feet, an average width of four feet, and a maximum depth of two feet. The upper half is a swift, rubble riffle four inches in average depth; the lower half is one and one-half feet in average depth and has a slow current (Pl. 29, Fig. 1).