Scientific Name
Thayeria boehlkei

Common Name
Blackline penguinfish

Biology
Feeds on worms, small insects and crustaceans. In the tank, female lays a large number of eggs, which hatch in about 20 to 24 hours (Ref. 7020). Maximum length reported to reach 6 cm TL (Ref. 7020). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51539).

Classification

Classified By

Weitzman, 1957

Class

Ray-finned fishes (Actinopterygii)

Order

Characins (Characiformes)

Family

Characins (Characidae)

Distribution

Region

South America

Distribution

South America: upper Amazon River basin in Peru and Araguaia River in Brazil.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

22 °C

Water Temperature To

28 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

pelagic

Environment

Freshwater; ; pH range: 6.0 - 8.0; dH range: 5 - 19 pelagic

Trophic Level

3.3 s.e. 0.41 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

3.2 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.6250 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 (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated