Scientific Name
Hemigrammus unilineatus

Common Name
Featherfin tetra

Biology
Usually found in ponds, ditches, slow flowing streams, both clear and turbid, in both open and shaded areas. A voracious species which feeds on small crustaceans, insects and mollusks (Ref. 12225). Gregarious and non-aggressive, it is reputedly easy to rear and to reproduce in the aquarium (Ref. 27188). Maximum length questionable (Ref. 38376).

Classification

Classified By

Gill, 1858

Class

Ray-finned fishes (Actinopterygii)

Order

Characins (Characiformes)

Family

Characins (Characidae)

Distribution

Region

Central and South America

Distribution

Central and South America: River basins of Trinidad, coastal river basins of Venezuela, rivers of Guyana, Suriname, French Guiana; Amazon and Guapor? River basins.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

23 °C

Water Temperature To

28 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; ; pH range: 6.0 - 7.5; dH range: ? - 20 benthopelagic

Trophic Level

3.36999988555908 s.e. 0.44 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

True

Physical Size and Genetics

Maximum Length

5.3 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Aquarium: commercial

Vulnerability

Low vulnerability (10 of 100)

Resilience

High, minimum population doubling time less than 15 months (tm

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated