Scientific Name
Polydactylus opercularis

Common Name
Yellow bobo

Biology
Dorsal spines (total): 9; Dorsal soft rays (total): 11-13; Anal spines: 3; Anal soft rays: 12 - 14. Body and fins yellowish; no stripes or spots. Anterior parts of lower jaw with villiform teeth extending onto lateral surface, adjacent part of lip poorly developed in large specimens. Vomerine teeth present. Maxilla covered with small deciduous scales. Pectoral filaments 9. Lateral line unbranched, extending to upper end of caudal fin lobe. Swim bladder absent (Ref. 45049).

Classification

Classified By

Gill, 1863

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Threadfins (Polynemidae)

Distribution

Region

Eastern Pacific

Distribution

Eastern Pacific: Los Angeles Harbor in California, USA to off Paita, Peru; rare north of Baja California, Mexico.

Range

34°N - 7°S, 118°W - 77°W

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

46 m

Zone

demersal

Environment

Marine; demersal; depth range ? - 46 m (Ref. 57343)

Trophic Level

3.62 s.e. 0.62 Based on diet studies.

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

50.0 cm

Common Length

25.0 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

Fisheries: minor commercial

Vulnerability

Low to moderate vulnerability (28 of 100)

Resilience

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

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)