Scientific Name
Neosebastes thetidis

Common Name
Thetis fish

Biology
Dorsal spines (total): 8; Dorsal soft rays (total): 8; Anal spines: 3; Anal soft rays: 5. Diagnosis: Dorsal rays XIII, 8 (7 or 9 in 3 of 48 specimens), fourth spine longest. Anal rays III, 5 (6 in 1 of 48 specimens). Pectoral rays 18-21 (mode 20), distal margin nearly rounded. Pored lateral-line scales 31-38 (35); longitudinal scale series 50-59 (54); scale rows between base of last dorsal spine and lateral line 6 or 7 (7). Well-developed gill rakers on upper limb 1, lower limb 4-6 (5), total 5-7 (6); rudimentary gill rakers on upper limb 3-5 (4), lower limb 3-8 (5). Swimbladder bilobed anteriorly (length 19% of SL, width 28% of SL, bilobed portion 67% of total swimbladder length). Dorsal profile of snout steep, forming angle of about 60-70? to horizontal axis of head and body. Nasal spine simple or with 2 points, directed upward or slightly forward, length of former approximately equal to or greater than anterior nostril diameter. Posterior margin of premaxilla

Classification

Classified By

Waite, 1899

Class

Ray-finned fishes (Actinopterygii)

Order

Scorpionfishes and Flatheads (Scorpaeniformes)

Family

Gurnard scorpionfishes (Neosebastidae)

Distribution

Region

Eastern Indian Ocean to Southwest Pacific

Distribution

Eastern Indian Ocean to Southwest Pacific: off southeastern and southern and southwestern coasts of Australia.

Range

Unknown

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

45 m

Depth To - meters

288 m

Zone

demersal

Environment

Marine; demersal; depth range 45 - 288 m (Ref. 54394)

Trophic Level

3.61 s.e. 0.60 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

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

35.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5002 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (24 of 100)

Resilience

Unknown

Threat To Humans

Venomous (Ref. 9563)

IUCN Red List Status

Not Evaluated