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<br /> <br /> <br /> <br /> <br />Summary of the Changes in the List of Fishes <br />and Their Distribution <br /> <br />As a result of the recent survey of the fishes of Wyoming, some species have <br />been added to the state list, others have been deleted, and some important changes <br />in distribution have been noted. <br /> <br /> <br />Species Added to the State List: <br /> <br />Dorosoma cepedianum, gizzard shad <br />Oncorhynchus kisutch, coho salmon <br />Salvelinus malma, Dolly Varden <br />Phoxinus neogaeus, finescale dace <br />Gila elegans. bony tail <br />Chasmistes lioms, June sucker <br />Esox lucius, northern pike <br />Poecilia reticulata, guppy <br />Pomoxis annularis, white crappie <br />Etheostoma nigmm, Johnny darter <br /> <br />. <br />E <br />i <br />j <br />;~ <br />, <br /> <br />. <br />If <br />~; <br /> <br />Species Deleted from the State List: <br /> <br />Salmo salar, the Atlantic salmon. Simon (1951) listed this species on the basis <br />of early introductions to Wyoming. It no longer occurs within the state. <br /> <br />Pantosteus jordani, Jordan's sucker, listed by Simon (1951) has been relegated <br />to the synonymy of Catostomus platyrhynchus (see p. 112). <br /> <br />Cottus semiscaber, the Rocky Mountain Bullhead, was treated as a full species <br />by Simon (1951), in this edition, this form is treated as a form of Cottus <br />bairdi, possibly a subspecies (see p. 150). <br /> <br />a <br /> <br />Species Erroneously Listed from the Literature for Wyoming: <br /> <br />Hybopsis storeriana. the silver chub. Although Wyoming has been included in <br />the range of this species (Forbes and Richardson 1920, p. 102; and Blair, et aI, <br />1957, p. III and 1968. p. 69), it has never been collected in the state. <br /> <br />Dionda nubila, the ozark minnow. Eddy (1957, p, 102) records the range of <br />this minnow as Wyoming to Illinois. According to Cross (1967 p. 143-144), <br />this species probably ranges north only to southeastern Kansas in the western <br />part of its range. <br /> <br />Species Retained on the State List, but probably now Extinct in Wyoming: <br />Ptychocheilus lucius, Colorado squaw fish <br />Notropis blennius, river shiner <br />ChiIsmistes lioms, June sucker <br />Xyrauchen texanus. humpback sucker <br />Gila elegans, bony tail <br /> <br />Changes in Distribution of Certain Species: <br />Major changes in the distribution of the fishes of Wyoming in recent years <br />seem to have resulted from two causes: (I) a general deterioration of stream <br />habitats resulting from multiple water uses, and (2) indiscriminate transplanting of <br />bait fishes from one drainage to another. <br /> <br /> <br /> <br />152 <br /> <br />..;':!i4:jJf""'~'~!I';1 <br /> <br />The <br />follows: <br />apparentl <br />The caus, <br />a variety <br />conditio ( <br />including <br />the coml <br />drainage. <br />and the <br />permancl <br />primarily <br />the NOr! <br />mostly 1 <br />increasc( <br />decrease <br />conceiva <br />the Norl <br />Missouri <br />the Norl <br />and a c( <br />are into' <br />species I <br />and CfC( <br />extincti' <br /> <br />Expans <br /> <br />T\ <br />toleranl <br />abovc, <br />toleran <br />abumb <br />spread <br />is proh <br />and val <br />by pCI <br />plains <br />establi~ <br />species <br />Buttes <br />its pre! <br /> <br />1 <br />suckcl <br />on th <br />establl <br />and II <br />natiVe <br />establ <br />result' <br /> <br />