Xenophallus umbratilis (Meek, 1912)

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Cyprinodontiformes \| Poeciliidae \| Poeciliinae
Synonyms	Gambusia umbratilis, Brachyrhaphis umbratilis, Neoheterandria umbratilis, ... more
Common names	Olomina, 蛰栖新异鮰, Kultaevähammaskarppi, ... more

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Main reference

Lucinda, P.H.F. 2003. (Ref. 50894)
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Size / Weight / Age

Max length : 4.5 cm SL male/unsexed; (Ref. 36880)

Environment

Pelagic; freshwater; pH range: ? - 7.2; dH range: ? - 3; depth range 10 - 20 m (Ref. 36880)

Climate / Range

Tropical; 21°C - 37°C (Ref. 36880)

Central America: Lake Nicaragua on the Atlantic drainage to the Río Parismina and the Río Tenorio drainage on the Pacific slope (Ref. 36880). Costa Rica and Nicaragua.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Body thin, translucent and yellowish. Base of the first dorsal rays with a black blotch; in males the posterior edge of the dorsal fin is also black and sometimes the remainder of the fin is brilliant yellow. The males and young have 5 to 10 black bars on the side which are diffuse or absent in females. The gonopodium is asymmetrical and either dextral or sinistral; the apex of which in mature males bears a long upper projection and swelling below, both of which are membranous (Ref. 36880).

Inhabits waters of all velocities, between 35 and 590 m elevation, with temperatures of 21 to 37°C. Lives in small groups in brooks, creeks and along the shorelines of rivers where it feeds on detritus, filamentous algae, aquatic insects and ooze. Probably reproduces throughout the year (Ref. 36880).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

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More information
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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (17 of 100)	Not marketed/unknown

Entered by Torres, Armi G.

Modified by Torres, Armi G.

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Page last modified by : elaxamana, 15 July 2009

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