Lesser spiny eel (Macrognathus aculeatus) fish species and information / pictures of Lesser spiny eel - Macrognathus aculeatus

Lesser spiny eel (Macrognathus aculeatus) fish species information

Scientific Name
Macrognathus aculeatus

Common Name
Lesser spiny eel

Biology
Dorsal spines (total): 14 - 20; Dorsal soft rays (total): 52-56; Anal spines: 3; Anal soft rays: 50 - 54. Body with series of obliquely oriented bars (Ref. 39392). Dorsal and anal fins with a row of isolated spines followed by a long continuous soft portion, both fins extending to but not confluent with caudal fin. Pelvic fins absent. Caudal fin rounded (Ref. 4792).

Classification

Classified By

Bloch, 1786

Class

Ray-finned fishes (Actinopterygii)

Order

Spiny eels (Synbranchiformes)

Family

Spiny eels (Mastacembelidae)

Distribution

Region

Asia

Distribution

Asia: Thailand, Malay Peninsula, Borneo and Indonesia. Reported from Bangladesh (Ref. 1479) and Nepal (Ref. 9496); India (Ref. 43634).

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

23 °C

Water Temperature To

28 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; brackish; ; pH range: 6.5 - 7.5; dH range: ? - 15 benthopelagic; potamodromous (Ref. 51243)

Trophic Level

3.32 s.e. 0.40 Based on size and trophs of closest relatives

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

38.0 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

Fisheries: minor commercial; aquarium: commercial

Vulnerability

Low vulnerability (24 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Fec>1000)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated