7863

• UCREFRP Catalog Number: 7863
• Author: Nature Conservancy, T.
• Title: Candidate Species Reports from the Natural Heritage Central Database.
• USFW Year: 1996.
• USFW - Doc Type: \
• Copyright Material: NO

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Element Global Ranking Form as of 04 JUN 1996
GILA BICOLOR SSP 11

Identifiers:
ELCODE: AFCJB1303K
GNAME: GILA BICOLOR SSP 11
ELDESCRIP: High Rock Springs tui chub; Cyprinidae

EO Specifications:
EOSPECS:

ARANKSPECS:

BRANKSPECS:

CRANKSPECS:

DRANKSPECS:

Descriptors:
TAXDIST:
GTAXCOM:

TAXON. STAT:
In need of taxonomic study; probably
Lahontan Basin tui chubs, especially
and Eagle lakes (B89MOY01NA).

allied to other
those of nearby Honey

OLD.TAXCOM:

GEXEMPSITE: HIGH ROCK SPRING, LASSEN CO., CA.
HABITAT: High rock Spring: pools, outflows, irrigation ditches and
artificial ponds. Life history is unknown but is presumable
similar to other tui chubs (see Moyle 1976) .

PERMANENCE: Permanent.

Rankinq Factors:
GESTEOS:
GESTEOSCOM: Unknown.

GABUND :
GABUNDCOM: Unknown. Found throughout the irrigation canals, and spring
pools and outflows.

GRANGE: A
GRANGECOM: High Rock Spring, Lassen Co., CA. Mills (1979) the chub is
found throughout an irrigation system fed by the spring. The
system includes about 4.8 km of ditches an 4 irrigation
ponds.

GTREND:
GTRENDCOM:

GPROTEOS : A
GPROTCOM: Entire habitat is on a privately owned ranch.

GTHREAT: A
GTHREATCOM: Introductions of exotics (TILAPIA and channel catfish, as
well as freshwater prawns), possibility of groundwater
mining in the area may decrease spring outflows.