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💧 Freshwater Critically Endangered 🌡️ Subtropical

Pallid sturgeon

Scaphirhynchus albus Forbes & Richardson, 1905
Max Length
200 cm
Max Weight
130.0 kg
Lifespan
41 yrs
Trophic Level
3.9
Depth
-
Climate
Subtropical
Resilience
Low
Vulnerability
67.00/100
Typical Length
81.7 cm
Depth Zone
demersal

📖 Overview

Adults inhabit large, deep, turbid river channels, usually in strong current over firm sand or gravel . They feed on aquatic insect immatures, particularly caddisfly larvae, and small fish . Threatened due to over harvesting and habitat loss . No length type given but assumed to be in TL.

Scientific Name
Scaphirhynchus albus
Authority
Forbes & Richardson, 1905
Habitat
Freshwater
Climate
Subtropical
Body Shape
Elongated
IUCN Status
CR
Max Length
200 cm
Max Weight
130 kg
Lifespan
41 years
Trophic Level
3.9
Resilience
Low
Vulnerability
67.00/100
Migration
Potamodromous
Salinity
0–0.5 ppt

🐟 Physical Description

Absence of scalelike scutes on belly; bases of outer barbels usually behind bases of inner barbels .: elongated.

🌀 Behaviour

Behavioural data for Pallid sturgeon is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal; potamodromous . Subtropical; 44°N - 30°N North America: nearly restricted to main channels of Missouri River and lower Mississippi River from Montana to Louisiana in USA.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Potamodromous
Trophic Level
3.9±0.63
Food Items

aquatic insect immatures, particularly caddisfly larvae, and small fish (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00363 × L3.23 (TL)
Max TL
200cm
Max Weight
130,000g

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
67.00/100
High vulnerability
Trophic Level
3.9
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Forbes & Richardson, 1905

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