Plainfin midshipman (Porichthys notatus) fish species and information / pictures of Plainfin midshipman - Porichthys notatus

Plainfin midshipman (Porichthys notatus) fish species information

Scientific Name
Porichthys notatus

Common Name
Plainfin midshipman

Biology
Dorsal spines (total): 2; Dorsal soft rays (total): 33-37; Anal spines: 0; Anal soft rays: 30 - 35; Vertebrae: 42 - 46. Caudal fin rounded and narrow; pectorals broad (Ref. 6885). Olive brown to bronze or dark iridescent purple on dorsal surface, paler on sides with a golden yellow on ventral surface; white space under eye with a black crescent below; white on posterior edge of maxillary; young with a weak dark dorsal saddle (Ref. 6885). Branchiostegal rays: 6 (Ref. 36489).

Classification

Classified By

Girard, 1854

Class

Ray-finned fishes (Actinopterygii)

Order

Toadfishes (Batrachoidiformes)

Family

Toadfishes (Batrachoididae)

Distribution

Region

Eastern Pacific

Distribution

Eastern Pacific: Sitka, Alaska to Magdalena Bay, southern Baja California, Mexico. Records from areas south of Baja California and in the Gulf of California are in error. Two populations exist, one from Oregon northward and the other from San Francisco southward (Ref. 2850).

Range

58°N - 28°N, 136°W - 112°W

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

366 m

Zone

demersal

Environment

Marine; demersal; depth range 0 - 366 m (Ref. 2850)

Trophic Level

4.04 s.e. 0.67 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

38.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5001 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: of potential interest

Vulnerability

Moderate to high vulnerability (47 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (tm=3.5; tmax=7)

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)