Scientific Name
Exyrias belissimus

Common Name
Mud reef-goby

Biology
Dorsal spines (total): 7; Dorsal soft rays (total): 10-12; Anal spines: 1; Anal soft rays: 9 - 10; Vertebrae: 26. Dorsal half of body brown, ventral half yellow, with 7-8 dark brown bars. Small silvery white spots on cheeks and opercula. Predorsal scales 8 or 9. Usually, spines on 1st dorsal fin elongated into filaments with the 3rd and 4th typically longest; spine of 2nd dorsal fin with red and white alternating bands, spots on rays and membrane. Cycloid scales only on nape and isthmus. Cheeks and opercula fully scaled. Teeth small and tightly packed in jaws.

Classification

Classified By

Smith, 1959

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Gobies (Gobiidae)

Distribution

Region

Indo-West Pacific

Distribution

Indo-West Pacific: East Africa to Samoa, north to Yaeyama Islands, south to Fiji.

Range

30°N - 30°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

20 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 0 - 20 m (Ref. 9710)

Trophic Level

2.79 s.e. 0.30 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

True

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

15.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5625 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Aquarium: commercial

Vulnerability

Low to moderate vulnerability (34 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated