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💧 Freshwater 🌡️ Subtropical

Blueface darter

Etheostoma cyanoprosopum Near & Kozal, 2017
Max Length
4.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
13.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Blueface darter (Etheostoma cyanoprosopum), first described by Near & Kozal, 2017 is a tiny fish in the family Percidae (order Perciformes). Adults typically reach 4.90 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Subtropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus.

Scientific Name
Etheostoma cyanoprosopum
Authority
Near & Kozal, 2017
Habitat
Freshwater
Climate
Subtropical
Max Length
4.9 cm
Trophic Level
3.2
Resilience
High
Vulnerability
13.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 9 - 12; Dorsal soft rays (total): 10 - 12; Anal spines: 2; Anal soft rays: 7 - 9. Etheostoma cyanoprosopum is distinguished by the following characters: lateral line complete with 45 to 53 scales; 11 to 17 transverse scale rows ; 16 to 20 scales around the caudal peduncle 16 to 20 ; dorsal fin with modally 10 spines and 12 rays; anal fin with 2 spines and 7 to 9 soft rays; pectoral fin with modally 14 rays; nape, belly, and prepectoral area are scaled; breast naked in most specimens; nine lateral blotches of pigment on side of body, 8 to 10 dorsal saddles, a narrow suborbital bar; spinous dorsal fin with three distinct color bands in nuptial males; a distal-most thin turquoise band, a medial band of dark red, and a basal-most band of black spots; second dorsal fin with blue color on distal third and a more basal red band limited to the posterior two-thirds of the fin. Nuptial males possess a turquoise to darker blue color on the pelvic fins, caudal fin, and margin of the anal fin. A turquoise color on the breast extends to the underside of the head, snout, and cheeks. A pale white line extends along the lateral line to the middle of the second dorsal fin. Absence of a red ocellus in the first interradial membrane of the first dorsal fin in both males and females .

🌀 Behaviour

Behavioural data for Blueface darter is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Subtropical North America: Upland streams on the Cumberland Plateau in the upper Bear Creek system (Tennessee River drainage) and the Hubbard Creek system (Mobile Basin) in Alabama, USA.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.2±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00676 × L3.12 (TL)
Max TL
4.9cm
Dorsal Spines
11
Dorsal Rays
11
Anal Spines
2
Anal Rays
8

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Subtropical
Described By
Near & Kozal, 2017

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