Bloch's gizzard shad (Nematalosa nasus) fish species and information / pictures of Bloch's gizzard shad - Nematalosa nasus

Bloch's gizzard shad (Nematalosa nasus) fish species information

Scientific Name
Nematalosa nasus

Common Name
Bloch's gizzard shad

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 15-19; Anal spines: 0; Anal soft rays: 17 - 26. Dark bluish dorsally, silvery below (Ref. 3259). A dark spot behind gill opening. Belly with 17 to 20 (usually 18) + 9 to 13 (usually 11), total 28 to 32 (usually 30) scutes. Anterior arm of pre-operculum with the third infra-orbital bone immediately above it, no fleshy gap between; lower jaw strongly flared outward. Pectoral axillary scale present; hind edge of scales distinctly toothed.

Classification

Classified By

Bloch, 1795

Class

Ray-finned fishes (Actinopterygii)

Order

Herrings (Clupeiformes)

Family

Herrings, shads and sardines (Clupeidae)

Distribution

Region

Indo-West Pacific

Distribution

Indo-West Pacific: Gulf of Aden north to the Persian Gulf, then eastward to the Andaman Sea, South China Sea and the Philippines, and north to southern tip of Korea. Single record from South Africa (Ref. 3259).

Range

38°N - 1°N, 47°E - 136°E

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

30 m

Zone

pelagic-neritic

Environment

Marine; freshwater; brackish; pelagic-neritic; anadromous (Ref. 51243); depth range 0 - 30 m (Ref. 6898)

Trophic Level

2.67 s.e. 0.28 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

True

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

22.0 cm

Common Length

15.0 cm

Phylogenetic Diversity Index

PD50 = 0.5005 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: minor commercial

Vulnerability

Low vulnerability (22 of 100)

Resilience

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

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)