Scientific Name
Synchiropus rosulentus

Common Name
Rosy dragonet

Biology
Dorsal spines (total): 4; Dorsal soft rays (total): 9; Anal spines: 0; Anal soft rays: 8. Males with 5 irregular brown blotches dorsally on body and a row of seven orange pink blotches along side linked dorsally by a midlateral narrow orange pink stripe; two small jet black spots above base of each pelvic fin; broken blue lines (brown in preservative) on head below eye, continuing onto gill membranes and pectoral-fin base where alternating with yellow; first dorsal fin with long dusky yellow to orange pink streaks on membranes; females similar but lacking the two small black spots and the blue and yellow striping of the lower head and pectoral-fin base; posterior two-thirds of the short first dorsal fin black.

Classification

Classified By

Randall, 1999

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Dragonets (Callionymidae)

Distribution

Region

Eastern Central Pacific

Distribution

Eastern Central Pacific: Hawaiian Islands and Johnston Island.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

5 m

Depth To - meters

24 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 5 - 24 m (Ref. 33412)

Trophic Level

3.08 s.e. 0.35 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

2.2 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 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

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated