Scientific Name
Neosilurus gjellerupi

Common Name
Northern tandan

Biology
Dorsal spines (total): 1; Dorsal soft rays (total): 6-8; Anal spines: 0; Anal soft rays: 69 - 89

Classification

Classified By

Weber, 1913

Class

Ray-finned fishes (Actinopterygii)

Order

Catfish (Siluriformes)

Family

Eeltail catfishes (Plotosidae)

Distribution

Region

Oceania

Distribution

Oceania: endemic to Papua New Guinea. There are 2 subspecies: Neosilurus gjellerupi gjellerupi from the Ramu system, southern watershed of the Sepik River and the Upper Purari system; and Neosilurus gjellerupi coatesi from the Torricelli Mountains and its foothills which form the northern watershed of the Sepik.

Range

3°S - 7°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

demersal

Environment

Freshwater; demersal

Trophic Level

3.49 s.e. 0.42 Based on size and trophs of closest relatives

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

30.0 cm

Common Length

Unknown 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

Unknown

Vulnerability

Low to moderate vulnerability (29 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