Scientific Name
Xenisthmus semicinctus

Common Name
Halfbelt wriggler

Biology
Dorsal spines (total): 7; Dorsal soft rays (total): 12; Anal spines: 1; Anal soft rays: 11; Vertebrae: 27. A species of Xenisthmus with the following combination of characters: second dorsal-fin rays I,12; A I, 11; vertebrae 10 + 17; indented tongue; well-developed flap on anterior rim of posterior naris; 12 large, closely spaced spots on upper sides of body, each connecting dorsally to, or almost to, mid-line by short, brown to dark brown bar; predorsal area broadly scaled to just behind vertical through posterior edge of preopercle, with narrow median wedge of scales extending further forward almost to pore D (Ref. 59014).

Classification

Classified By

Gill & Hoese, 2004

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Collared wrigglers (Xenisthmidae)

Distribution

Region

Eastern Indian Ocean

Distribution

Eastern Indian Ocean: Rowley Shoals, Western Australia.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

1 m

Depth To - meters

2 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 1 - 2 m (Ref. 59014)

Trophic Level

3.03 s.e. 0.45 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

True

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

1.9 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5081 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (10 of 100)

Resilience

Unknown

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated