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Montana Field Guide

Montana Field Guides

Green Swordtail - Xiphophorus helleri

Exotic Species (not native to Montana)

Global Rank: G5
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:


 

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General Description
This tropical aquarium fish is an illegally released pet fish. The native range is southeastern United States, Mexico, and Central America.

Diagnostic Characteristics
Most are solid reddish orange; some are reddish orange with black fins or reddish orange with black mottling. Swordlike tail fin usually has black edges. The classical green variety with red and yellow stripes on sides is rare in Montana waters.

Summary of Observations Submitted for Montana
Number of Observations: 3

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Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Can exist in Montana only in warm springs, ponds, and resultent streams in water temperatures of 68-80 degrees F.

Food Habits
An avid feeder, utilizing any organisms or organic debris which are suspended in the water. Includes both zoo- and phytoplankton as well as small instars of aquatic insects.

Reproductive Characteristics
Sexually mature in 3-4 months. Internal fertilization. Several broods per year under favorable conditions.

References
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Citation for data on this website:
Green Swordtail — Xiphophorus helleri.  Montana Field Guide.  .  Retrieved on , from