Scientific Name
Radiicephalus elongatus

Common Name
Tapertail

Biology
Dorsal spines : 0; Dorsal soft rays : 152-160; Anal spines: 0; Anal soft rays: 6 - 7; Vertebrae: 114 - 121. Body and tail silvery in color; dorsal base blackish. Branchiostegal rays: 4-6. Pelvic fins absent in adults.

Classification

Classified By

Os?rio, 1917

Class

Ray-finned fishes (Actinopterygii)

Order

Velifers, Tube-eyes and Ribbonfishes (Lampriformes)

Family

Tapertails (Radiicephalidae)

Distribution

Region

Eastern Atlantic

Distribution

Eastern Atlantic: off Morocco and the Azores southward to Cape Point, South Africa. Eastern Pacific: present in the California Current region.

Range

38°N - 40°S, 130°W - 20°E

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

570 m

Depth To - meters

Unknown m

Zone

pelagic-oceanic

Environment

Marine; pelagic-oceanic; depth range 570 - ? m

Trophic Level

3.87 s.e. 0.63 Based on food items.

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

76.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Moderate to high vulnerability (50 of 100)

Resilience

Unknown

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated