Scientific Name
Cualac tessellatus

Common Name
Checkered pupfish

Biology
An egg laying omnivorous fish which prefers rocky-gravelly substratum with vegetation. Aquarium conditions: pH=7.2, H=12, 28?C water temperature (Ref. 6398). Not a seasonal killifish. Is easy to maintain in the aquarium (Ref. 27139).

Classification

Classified By

Miller, 1956

Class

Ray-finned fishes (Actinopterygii)

Order

Live bearers, Killifishes and Rivulines (Cyprinodontiformes)

Family

Pupfishes (Cyprinodontidae)

Distribution

Region

North America

Distribution

North America: San Luis Potosi, Mexico.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

28 °C

Water Temperature To

30 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Freshwater; ; pH range: 7.9 - ? ; dH range: 53 - ? demersal; non-migratory

Trophic Level

2.91 s.e. 0.32 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

True

Physical Size and Genetics

Maximum Length

8.0 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

Fisheries: of no interest; aquarium: commercial

Vulnerability

Moderate vulnerability (35 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Endangered (EN) (A2e, B1+2ab)