Scientific Name
Trimma sostra

Common Name
Sostra pygmy goby

Biology
Dorsal spines (total): 7; Dorsal soft rays (total): 8-9; Anal spines: 1; Anal soft rays: 8 - 9. Diagnosis: Seven large regular orange red bars along the side of the body; a dark spot on the lower base of the pectoral fin, and another on the lower peduncle; internal pigmentation on the dorsal surface of the head just behind eyes well-developed but broadly diffused, not forming a discreet bar. Predorsal scales absent. Second dorsal spine slightly to very elongate. A moderate interorbital and variably-developed postorbital trench. The fifth pelvic fin ray is unbranched and 50-70% of the length of the fourth.

Classification

Classified By

Winterbottom, 2004

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Gobies (Gobiidae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: Caroline Is., Fiji, Kiribati Republic, Marshall Is., Solomon Is., and Ponape.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

40 m

Zone

demersal

Environment

Marine; demersal; depth range 0 - 40 m (Ref. 52975)

Trophic Level

3 s.e. 0.00 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

2.4 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