Additional Oklahoma Fishes with Validation of Poecilichthys parvipinnis (Gilbert and Swain)

Abstract

DURING the past two years collections of fishes from Oklahoma have yielded thirteen previously unrecorded species. Six of these-Cycleptus elongatus, Moxostoma aureolum, Carassius auratus, Schilbeades mollis, Poecilichthys jessiae, and P. cragini-were included by Hubbs in a manuscript supplementary list of fishes known from adjacent regions and consequently to be expected in Oklahoma. P. cragini was taken in northeastern Oklahoma from the Grand (Neosho) River system. Archosargus probatocephalus is reported on the basis of specimens seen from the Arkansas and Red River systems. Lepomis auritus, Perca flavescens, Menidia audens, Notropis atrocaudalis, Poecilichthys jessiae, P. parvipinnis, and Lepomis symmetricus were taken exclusively in the Red River system, the last four only in southeastern Oklahoma. Notes on the various species follow. The following abbreviations are used. OAM_:Oklahoma Agricultural and Mechanical College; UOMZ=University of Oklahoma Museum of Zoology; UMMZ=University of Michigan Museum of Zoology; USNM= United States National Museum, and MCZ=Museum of Comparative Zoology. Cycleptus elongatus (LeSueur). Three blue suckers (OAM 2073) were taken Feb. 28, 1948, by W. H. Thompson in a 1 '2-inch mesh gill net in Love County near the mouth of Hickory Creek in Lake Texoma, a large Red River impoundment completed in 1944. The length in millimeters followed by the weight in grams of each specimen is 365, 709; 370, 723; and 387, 735. Scale samples indicate that these fish belong to the 1946-year class and, therefore, must have been born above the dam. Collections made in May, 1948, from the Washita River, a Lake Texoma tributary, at Daugherty, failed to yield any blue suckers. Two young Cycleptus (UOMZ 25815, 35.5 and 50 mm.) were seined by Thompson in Carey Bay, Grand Lake, June 17, 1948. George Harry informed us that a blue sucker was taken in southwestern Missouri in Elk River, which flows into Grand Lake in Delaware County, Oklahoma. Characters of the Oklahoma specimens are as follows: lateral line scales 48 in 1, 53 in 1, and 55 in 3; dorsal rays 30 in 2 and 31, 33, and 34 in 1 each; anal rays 5 in 1, 7 in 3, and 8 in 1. The upper lobe of the caudal fin in the young is devoid of pigment except at the border. Moxostoma aureolum (LeSueur).-Eight young (OAM 1528, 31-44 mm.) of the northern redhorse were collected by Moore, July 12 and 13, 1946, from the Chikaskia River northeast of Tonkawa in Kay County. At that time the Chikaskia was an olive brown color with pH 8.4, temperature 30? C., and flowed over a bottom of sand and mud. The redhorse were taken