Rio Negro pygmy anchovy (Amazonsprattus scintilla) fish species and information / pictures of Rio Negro pygmy anchovy - Amazonsprattus scintilla

Rio Negro pygmy anchovy (Amazonsprattus scintilla) fish species information

Scientific Name
Amazonsprattus scintilla

Common Name
Rio Negro pygmy anchovy

Biology
Dorsal spines (total): 0; Anal spines: 0; Anal soft rays: 12 - 14. Mouth small, pre-maxillae absent or minute and toothless; maxilla very short, just reaching to front border of eye, with two supra-maxillae; articulation of lower jaw under hind border of pupil or just behind. Dorsal fin origin well behind midpoint of body; anal fin origin under first quarter of dorsal fin base. In life translucent or even transparent.

Classification

Classified By

Roberts, 1984

Class

Ray-finned fishes (Actinopterygii)

Order

Herrings (Clupeiformes)

Family

Anchovies (Engraulidae)

Distribution

Region

South America

Distribution

South America: endemic to the Amazon system (Rio Jufari between Castanheiro Grande and Santa F?, also Rio Negro at Santa Isabel).

Range

0°S - 3°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

pelagic

Environment

Freshwater; pelagic

Trophic Level

3.15 s.e. 0.35 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

False

Physical Size and Genetics

Maximum Length

2.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: of no interest

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