Dusky millions fish (Phalloceros caudimaculatus) fish species and information / pictures of Dusky millions fish - Phalloceros caudimaculatus

Dusky millions fish (Phalloceros caudimaculatus) fish species information

Scientific Name
Phalloceros caudimaculatus

Common Name
Dusky millions fish

Biology
Dorsal soft rays (total): 7-9. Dorsal fin short; pectoral fin small, not reaching back to level of pelvic fin bases; body and fins covered with a profusion of black patches; tip of gonopodium of male with a distinctly downturned hook (Ref 54372).

Classification

Classified By

Hensel, 1868

Class

Ray-finned fishes (Actinopterygii)

Order

Live bearers, Killifishes and Rivulines (Cyprinodontiformes)

Family

Poeciliids (Poeciliidae)

Distribution

Region

South America

Distribution

South America: Rio de Janeiro, Brazil southward to Uruguay and Argentina (Ref. 9086). Introduced mainly for mosquito control (Ref. 1739). At least one country reports adverse ecological impact after introduction.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

20 °C

Water Temperature To

24 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

pelagic

Environment

Freshwater; brackish; ; pH range: 7.0 - 8.0; dH range: 9 - 19 pelagic; non-migratory

Trophic Level

2.82 s.e. 0.36 Based on diet studies.

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

3.5 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 (20 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Unknown

IUCN Red List Status

Not Evaluated