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💧 Freshwater Vulnerable 🐠 Aquarium 🌡️ Subtropical

Chihuahua chub

Gila nigrescens Girard, 1856
Max Length
24 cm
Max Weight
-
Lifespan
-
Trophic Level
2.2
Depth
-
Climate
Subtropical
Resilience
Medium
Vulnerability
36.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Adults inhabit flowing pools of creeks and small rivers, usually near brush or other cover . Migratory behaviour is undetermined .

Scientific Name
Gila nigrescens
Authority
Girard, 1856
Habitat
Freshwater
Climate
Subtropical
Body Shape
Fusiform / normal
IUCN Status
VU
Max Length
24 cm
Trophic Level
2.2
Resilience
Medium
Vulnerability
36.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 9; Anal soft rays: 8. Gila nigrescens can be distinguished by the following characters: lateral line with 67-78 scales; dorsal fin with 9 rays; anal fin with 8 rays; 1st gill arch with 9014 rakers; pharyngeal teeth 2,5-4,2; deep, compressed body; long, fairly slender caudal peduncle; terminal mouth on rounded snout; olive-gray above; silver side; clear to slate gray fins; and breeding individuals with red-orange mouth and paired and anal-fin bases .: fusiform / normal.

🌀 Behaviour

Behavioural data for Chihuahua chub is currently being reviewed.

🦐 Diet

algae
aquatic plants
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Subtropical; 33°N - 30°N North America: Mimbres River in New Mexico, USA; Lagunas Guzman and Bustillos, Chihuahua in Mexico.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.2±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.01148 × L3.03 (TL)
Max TL
24cm
Dorsal Rays
9
Anal Rays
8

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
36.00/100
Moderate vulnerability
Trophic Level
2.2
Omnivore / Planktivore
Body Shape
Fusiform / normal
Climate Zone
Subtropical
Described By
Girard, 1856

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 2 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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View all observations for Chihuahua chub ↗
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