Scientific Name
Hyphessobrycon axelrodi

Common Name
Calypso tetra

Biology
Inhabits clear to slightly turbid standing water at low elevations and along the edges of swamps (Ref. 11225). Occurs frequently in brackish waters (Ref. 11225). Maximum length of aquarium specimen 4.0 TL (Ref. 12468).

Classification

Classified By

Travassos, 1959

Class

Ray-finned fishes (Actinopterygii)

Order

Characins (Characiformes)

Family

Characins (Characidae)

Distribution

Region

Central America

Distribution

Central America: Trinidad.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

22 °C

Water Temperature To

23 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; brackish; ; pH range: 5.5 - 6.0 benthopelagic

Trophic Level

2.97 s.e. 0.33 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

False

Occurs in Brackish water

True

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

2.2 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: highly commercial

Vulnerability

Low vulnerability (10 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