Scientific Name
Xenodexia ctenolepis

Common Name
Grijalva studfish

Biology
Inhabits slow as well as rapid flowing waters. Occurs with two other genera of livebearers, Poecilia and Xiphophorus, depending upon locality.

Classification

Classified By

Hubbs, 1950

Class

Ray-finned fishes (Actinopterygii)

Order

Live bearers, Killifishes and Rivulines (Cyprinodontiformes)

Family

Poeciliids (Poeciliidae)

Distribution

Region

Central America

Distribution

Central America: Guatemala in the Finca River basin, 30 km NW of C?ban, Alta Vera Paz, in the Salb? River, tributary to the Negro River (Chixoy River) which becomes the Salinas River of the Usumacinta basin..

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

21 °C

Water Temperature To

26 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

pelagic

Environment

Freshwater; ; pH range: 7.2 - 7.8; dH range: 5 - 15 pelagic

Trophic Level

2.96 s.e. 0.35 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

4.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (17 of 100)

Resilience

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

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated