Spring cavefish (Forbesichthys agassizii) fish species and information / pictures of Spring cavefish - Forbesichthys agassizii

Spring cavefish (Forbesichthys agassizii) fish species information

Scientific Name
Forbesichthys agassizii

Common Name
Spring cavefish

Biology
Dorsal soft rays (total): 9-11; Anal soft rays: 9 - 11; Vertebrae: 33 - 35. Scales minute and embedded. Pelvic fins absent. Branched caudal fin rays 11-17; branchiostegal rays 6. Triads of sensory papillae occur midlaterally and scattered clusters of neuromasts are present on the head. Coloration uniform dark gray to back with paler venter.

Classification

Classified By

Putnam, 1872

Class

Ray-finned fishes (Actinopterygii)

Order

Trout-perches, Pirate perches and Cavefish (Percopsiformes)

Family

Cavefishes (Amblyopsidae)

Distribution

Region

North America

Distribution

North America: portions of Tennessee, Kentucky, Illinois and Missouri, U.S.A.

Range

39°N - 35°N

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Freshwater; demersal

Trophic Level

3.28 s.e. 0.44 Based on food items.

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

9.0 cm

Common Length

5.3 cm

Phylogenetic Diversity Index

PD50 = 1.0176 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (21 of 100)

Resilience

High, minimum population doubling time less than 15 months (K=0.67; tm=1; tmax=3; Fec = 100)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated