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<br />specimens of C. b. grandis average over 40 mm SL, occasionally exceeding 65 mm.
<br />Meristics and Morphometries.=- The following values are based on 30 Creniehthys
<br />baileyi (12 male, 18 female) from Hiko Spring, 31.9-65.5 mm SL. Typical fin ray numbers:
<br />dorsal 10 or 11, anal 13, caudal 18, and left pectoral 17 (Table 3). Lateral line scales
<br />typically 29 and caudal peduncle circumference scales typically 16 or 17 (Table 4).
<br />Predorsallength: ~ 712.42 (705-722), ~ 712.44 (684-732). Anal to caudal length: ~
<br />360.17 (344-391), ~ 377.83 (306-365). Greatest body depth: ~ 383.50 (336-432), ~
<br />331.00 (293-370). Greatest body width: J 218.92 (192-237), ~ 210.11 (196-234). Head
<br />length: ~ 303.58 (284-320), ~ 307.67 (289-337). Head depth: ~ 252.33 (236-274), ~
<br />247.89 (233-277). Head width: J 224.17 (212-245), ~ 229.61 (211-248). Least bony
<br />interorbital width: J 138.42 (117-155), ~ 139.50 (122-162). Snout length: J 81.25
<br />(69-93), ~ 85.22 (72-94). Orbit length: J 79.08 (69-87), ~ 76.39 (64-85). Depressed
<br />dorsalfin length: ~ 243.67 (221-272), ~ 217.22 (198-247). Depressed analfin length: J
<br />247.25 (201-294), ~ 213.00 (192-234). Middle ray caudalfin length: J 201.40 (182-216),
<br />~ 200.88 (182-224). The following vertebral counts are based on 20 specimens (UMMZ
<br />M124998), with frequency of each count given in parenthesis; precaudal: 12(17),13(3),
<br />avg. 12.2; caudal: 15(1), 16(6), 17(13), avg. 16.6; total: 28(5), 29(15), avg. 28.8.
<br />Etymology.- The Latin name grandis refers to the relatively large size of this
<br />subspecies.
<br />
<br />Crenichthys b. baileyi (Gilbert). White River springfish (Fig. 10).
<br />Diagnosis.-Creniehthys b. baileyi differs from C. b. albivallis in having a longer head
<br />and greater least bony interorbital width (Figs. 2, 3). Creniehthys b. baileyi differs from
<br />C. b. thermophilus in possessing a longer anal to caudal length (Fig. 4). Crenichthys b.
<br />baileyi differs from C. b. grandis and C. b. moapae in having fewer fin rays (Table 3).
<br />Type Material.- Two of the original type specimens utilized by Gilbert (1893) to
<br />describe Cyprinodon macularius baileyi (now Crenichthys baileyi) are deposited at the
<br />California Academy of Sciences (SU 709). Since the syntypes of Gilbert were immature
<br />(< 20 mm SL), two topotypes, one of each sex, have been chosen to serve as representative
<br />specimens of C. b. baileyi. Representative topotypes, male (UMMZ 203331), 30.1 mm
<br />(SL); and female (UMMZ 203331),35.4 mm; collected 10 Jun. 1967by J. E. Deacon from
<br />Ash Spring along with 29 additional specimens, ASU-5196 (21.0-40.0 mm).
<br />Distribution.-Crenichthys b. baileyi is restricted to a single spring, Ash (T 6 S, R 61 E,
<br />See 6) in Pahranagat Valley, Lincoln Co., Nevada. The Crenichthys baileyi that inhabit
<br />the outflow creek below Ash Spring exhibit some integration of meristic and color
<br />characters with C. b. grandis. Crystal Spring is located in the main river channel just
<br />upstream from Ash Spring. Crenichthys prefer and predominately inhabit springs;
<br />however, the location of Crystal Spring in the main river channel makes it susceptible to
<br />floods and therefore provides a mechanism to disperse springfish downstream into the
<br />extensive outflow creek of Ash Spring. The head pool population of Crenichthys in Ash
<br />Spring is separated from the outflow creek by precipitous topography, preventing
<br />movement of springfish from the outflow creek into the head pool, insuring the genetic
<br />purity of the head pool fish.
<br />Species Associates and Status.-Gila robusta iordani, Rhiniehthys osculus velifer,
<br />Catostomus clarki intermedius, and Lepidomeda altivelis were associated with
<br />Crenienthys in the Ash Spring outflow (Miller and Hubbs 1960). The description of
<br />Rhinichthys o. velifer by Gilbert (1893) indicates its association with Crenichthys in the
<br />head pool area. Several exotic species (Gambusia affinis, Poecilia mexicana, P. latipinna,
<br />and Cichlasoma nigrofaseiatum) have become established in the main pool area (Hubbs
<br />and Deacon 1964). Due to the establishment of these exotic species, Crenichthys b.
<br />baileyi is very rare.
<br />Description.-Crenichthys b. baileyi is a moderately sized C. baileyi subspecies. Many
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