Scientific Name
Scorpaena isthmensis

Common Name
Smooth-cheek scorpionfish

Biology
Dorsal spines (total): 12; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 5. Occipital pit present; two spines on part of preorbital overlapping maxillary; supplemental preopercular spine present; no dark spot on inner basal part of pectoral fin; dark brown spots on membrane between third and fourth and fifth and seventh dorsal spines; no spines on suborbital ridge; eye diameter 0.9-1.5 times of snout length (Ref. 13608).

Classification

Classified By

Meek & Hildebrand, 1928

Class

Ray-finned fishes (Actinopterygii)

Order

Scorpionfishes and Flatheads (Scorpaeniformes)

Family

Scorpionfishes or rockfishes (Scorpaenidae)

Distribution

Region

Western Atlantic

Distribution

Western Atlantic: South Carolina, USA and northern Gulf of Mexico to Brazil.

Range

34°N - 33°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

110 m

Zone

demersal

Environment

Marine; demersal; depth range ? - 110 m

Trophic Level

3.56 s.e. 0.57 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

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

16.0 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 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