Scientific Name
Pterobrycon myrnae

Common Name
Semaphore tetra

Biology
Aquarium specimens reach 7.0 cm TL (Ref. 2060). Inhabits creeks of low to high current velocity. Collected in sites between elevations of 10 to 80 m, insectivorous (Ref. 36880).

Classification

Classified By

Bussing, 1974

Class

Ray-finned fishes (Actinopterygii)

Order

Characins (Characiformes)

Family

Characins (Characidae)

Distribution

Region

Central America

Distribution

Central America: Pacific drainages of southern Costa Rica, Jicote and Rincon rivers and the Esquinas River of Osa Peninsula.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

23 °C

Water Temperature To

26 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; ; pH range: 6.0 - 7.0; dH range: ? - 15 benthopelagic

Trophic Level

3.2 s.e. 0.42 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

3.9 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.7500 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

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