Bengal thryssa (Thryssa spinidens) fish species and information / pictures of Bengal thryssa - Thryssa spinidens

Bengal thryssa (Thryssa spinidens) fish species information

Scientific Name
Thryssa spinidens

Common Name
Bengal thryssa

Biology
Dorsal spines (total): 0; Anal spines: 0; Anal soft rays: 41 - 45. Belly with 16 (rarely 17) + 11 to 13 = 27 to 29 keeled scutes from isthmus to anus. Tip of snout on level with upper rim of eye. Maxilla moderate, projecting a little beyond gill cover; first supra-maxilla minute, usually absent; teeth in jaws enlarged, especially in lower jaw. A dark blotch indistinct or absent behind upper part of gill opening; no dark lines along back.

Classification

Classified By

Jordan & Seale, 1925

Class

Ray-finned fishes (Actinopterygii)

Order

Herrings (Clupeiformes)

Family

Anchovies (Engraulidae)

Distribution

Region

Eastern Indian Ocean

Distribution

Eastern Indian Ocean: northeastern Bay of Bengal, from Calcutta south to the Indian Ocean coast of Thailand, perhaps to Pinang.

Range

25°N - 3°N, 85°E - 101°E

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

50 m

Zone

pelagic-neritic

Environment

Marine; pelagic-neritic; depth range 0 - 50 m (Ref. 189)

Trophic Level

3.31 s.e. 0.46 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

16.5 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

Unknown

Vulnerability

Low vulnerability (19 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