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Arroyo cichlid (Theraps irregularis) fish species and information / pictures of Arroyo cichlid - Theraps irregularis

Arroyo cichlid (Theraps irregularis) fish species information

Scientific Name
Theraps irregularis

Common Name
Arroyo cichlid

Biology
Occurs only in fast moving water of the rocky upper river valleys. Feeds on aufwuchs, from which it gets nourishment from algae and invertebrates.

Classification

Classified By

G?nther, 1862

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Cichlids (Cichlidae)

Distribution

Region

Central America

Distribution

Central America: Atlantic slope of Mexico and Guatemala (Usumacinta, Sarstun and Dulce River basins).

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

26 °C

Water Temperature To

30 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; ; pH range: 7.0 - ? ; dH range: 10 - 20 benthopelagic

Trophic Level

2.57 s.e. 0.21 Based on food items.

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

19.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5039 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low to moderate vulnerability (26 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