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170 The Southwesrnn Naturalist vol. 28, no. 2
<br />TARLr 1.-Gammon and srirnliJir names of Ashes rrprf5rnlfd by SpPflmPnf OT OtbPrlU rSr rPhably
<br />rrported J~om Lake 6lohanP, Arizona-Nevada.
<br />Threadlin shad, Dorosoma prtrnrnsc (Gunther)
<br />Silver (coho) salmon, Onrorhyurhus kisutch (K'albaum)
<br />Sockeye (kokanee) salmon, O. nrrka (Walbaum)
<br />Brook trout, SaG)rlinur Jontinalis (Mitrhilq
<br />Rainbow trout, Salmo gairdnrri Richardson
<br />Cutthroat trout, S. darki Richardson -
<br />Carp, Cyprinus rarpio Linnaeus
<br />Goldfish, Carassius auratus (Linnaeus)
<br />Golden shiner, ll'otemigonus rrysoleucus (Mitchill)
<br />Bonytail chub, Gila elegans Baird and Girard
<br />Humpback chub, G. rypha Mil1eN•r
<br />Colorado squawfish, Pryrhorhrilus lurius Girard'
<br />Speckled dace, Rhinirhthys osculus (Girardp
<br />Red shiner, Nohopis lutrrnsis (Baird and Girard)
<br />Fathead minnow, Pimrphnles promelas Rafinesque
<br />Razorback sucker, Xyrauchrn trxanus (Abbottp
<br />Flannelmouth sucker, Catosfomus latipinnis Baird and Girard'
<br />Uuh sucker, C. a>dens Jordan and Gilbert s
<br />Channel pdish, lcta/urns punrtatus (Rafinesque)
<br />Yellow bullhead, 1, natalis (LeSueur)
<br />Black bullhead, 1. me/as (Rafinesque)
<br />Mosquitofish, Gambusia aJJinis (Baird and Girard)
<br />Smallmouth bass, Minoptrrus dolomieui (Lacepede)
<br />Largemouth bass, M. salmoides (Lacepede)
<br />Green sunfish, Lrpomis ryanelfus Rafinesque
<br />Bluegill, L. manorhirus Rafinesque
<br />Redear sunfish L. mioolophus (Gunther)
<br />Black crappie, Pomoxis nigromarulalus (LeSueur)
<br />Striped bass, Moronc saxatilis (Walbaum)
<br />'Nas yr species
<br />rRecosded hom shr asra hum an a,rharulu¢iral rise (Gssrlaw Gre; Miller 1955 rmw~ fl..)dnr M 1,a1r Moha)e.
<br />'This ronnimsrs she fins record of Uuh sucker Irom open wasers of Ariama (ASI! enneaion of Fiahrs).
<br />Mohave south o[ the influence o[ Lake Mead become too warm in April (ca.
<br />21° C) to be preferred by salmonids, and they were common only in winter
<br />months. Small centrarchids were consistently in IoN~ numbers. Bluegill were
<br />netted in all but 2 sampling sessions, but green sunfish v,~ere caught in only
<br />4 of the 12 collections. Threadtin shad, caught by thousands in fine-meshed
<br />gill and fyke nets, were obviously selected against by mesh sizes o[ trammel
<br />nets, and were taken only three times. Bonytail chubs were exceedingly rare,
<br />with only 18 individuals caught in the 8-year period.
<br />Razorback suckers were collected or observed in Lake Mohave in water
<br />varying from 0.5 to 10+ m deep over essentially all available types of sub-
<br />stra[e. However, largest concentrations were in water <5.0 m deep over
<br />gravel or cobble bottoms. They were strongly second to carp in relative
<br />abundance in 1975-6 (Table 2), decreased to third or fourth to channel cat-
<br />fish, largemouth bass, and/or rainbow trout in subsequent years, then again
<br />were abundant in 1981. Sampling in January and ]November 1981 was
<br />biased toward razorback suckers, since netting was specifically for acquisti-
<br />tion o[ a hatchery brood stock and nets were set low in the water column.
<br />Netting near the surface to catch bon}•tail chubs for brood stock in March
<br />1981 still caught relatively-large numbers of razorback suckers. There are
<br />May 1989 Minckley-Slams of Razorback Sucker 171
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