Scientific Name
Rhinoprenes pentanemus

Common Name
Threadfin scat

Biology
Dorsal spines (total): 8; Dorsal soft rays (total): 19-20; Anal spines: 3; Anal soft rays: 16 - 17. Body deep and compressed, quadrangular in outline. Mouth small and inferior. Second dorsal spine, fourth pectoral ray, and first pelvic ray greatly prolonged into free filaments which reach tail base or beyond. First dorsal-fin spine, fourth pectoral-fin ray, and first pelvic-fin ray greatly elongated filaments, reaching to or beyond vertical line at rear end of dorsal-and anal-fin bases. Head naked. Mouth inferior, the snout and upper jaw projecting in front of lower jaw (Ref 43039).

Classification

Classified By

Munro, 1964

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Spadefishes, batfishes and scats (Ephippidae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: Papua New Guinea to northern Australia.

Range

Unknown

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

Marine; brackish; demersal

Trophic Level

2 s.e. 0.00 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

True

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

15.0 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 (14 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