Scientific Name
Pseudorhombus oligodon

Common Name
Roughscale flounder

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 78-82; Anal spines: 0; Anal soft rays: 61 - 65; Vertebrae: 38. Two dark spots along gill opening below pectoral fin. Dark blotch a beginning of straight part of lateral line (Ref. 559). Soft ray count of pectoral fin refers to that on ocular side.

Classification

Classified By

Bleeker, 1854

Class

Ray-finned fishes (Actinopterygii)

Order

Flatfishes (Pleuronectiformes)

Family

Large-tooth flounders (Paralichthyidae)

Distribution

Region

Northwest Pacific

Distribution

Northwest Pacific: southern Japan to the South China Sea.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

30 m

Depth To - meters

40 m

Zone

demersal

Environment

Marine; demersal; depth range 30 - 40 m (Ref. 9774)

Trophic Level

4.2 s.e. 0.73 Based on food items.

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

30.0 cm

Common Length

15.0 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: commercial

Vulnerability

Low to moderate vulnerability (31 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