Scientific Name
Trimma randalli

Common Name
Randall?s pygmy goby

Biology
Dorsal spines (total): 7; Dorsal soft rays (total): 8-9; Anal spines: 1; Anal soft rays: 8 - 9. This species is characterized by the following characters: scales on the cheek, opercle, pectoral fin base and the predorsal midline; a moderate to well developed interorbital trench with steep sides; absence of postorbital trenches; no enlarged teeth in the upper jaw; ground color of preserved specimens yellow with a strikingly black caudal fin, in freshly dead material the ground color is mustard-yellow and the caudal fin rays are deep red with black interradial membranes, edged with a white band (Ref. 59339).

Classification

Classified By

Winterbottom & Zur, 2007

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Gobies (Gobiidae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: Palau and the Philippines.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

2 m

Depth To - meters

17 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 2 - 17 m (Ref. 59339)

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

True

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

2.0 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