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💧 Freshwater Vulnerable 🌡️ Subtropical

Rio Grande darter

Etheostoma grahami Girard, 1859
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Max Length
6 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
13.00/100
Typical Length
3 cm
Depth Zone
-

📖 Overview

Inhabit gravel and rubble riffles of creeks and small rivers . Eggs are found attached to the substrate unguarded .

Scientific Name
Etheostoma grahami
Authority
Girard, 1859
Habitat
Freshwater
Climate
Subtropical
IUCN Status
VU
Max Length
6 cm
Trophic Level
3.2
Resilience
High
Vulnerability
13.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Physical description for Rio Grande darter is currently being compiled.

🌀 Behaviour

Behavioural data for Rio Grande darter is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Eggs are found attached to the substrate unguarded .

🌍 Habitat & Distribution

Freshwater; benthopelagic. Subtropical; 31°N - 25°N North America: lower Rio Grande drainage in Texas, USA and Mexico.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.2±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00676 × L3.12 (TL)
Max TL
6cm

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2019

📊 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
Girard, 1859

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