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💧 Freshwater Critically Endangered 🌡️ Subtropical

Spring pygmy sunfish

Elassoma alabamae Mayden, 1993
Max Length
-
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
-
Climate
Subtropical
Resilience
Low
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Found on sand, clay, mud and/or limestone substrate commonly associated with rooted, submerged vegetation . Oviparous, eggs are deposited in aquatic vegetation, preferably on strands of Ceratophyllum sp. when available .

Scientific Name
Elassoma alabamae
Authority
Mayden, 1993
Habitat
Freshwater
Climate
Subtropical
Body Shape
Fusiform / normal
IUCN Status
CR
Trophic Level
3.4
Resilience
Low
Vulnerability
10.00/100
Migration
Non-migratory
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 1 - 3; Dorsal soft rays (total): 8 - 13; Anal spines: 1 - 3; Anal soft rays: 5 - 8. Transverse scale rows: 10-13. Distinguished from all other family members by having 3 or less dorsal spines (versus 7 or more), 6-7 broad dark bars along flanks (versus 7 or more), 16-18 peduncle scale rows (versus 18-24).: fusiform / normal; Cross section: oval.

🌀 Behaviour

Behavioural data for Spring pygmy sunfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Eggs are deposited in aquatic vegetation, preferably on strands of Ceratophyllum sp. when available .

🌍 Habitat & Distribution

Freshwater; benthopelagic; non-migratory . Subtropical North America: endemic to Moss Spring and (historically) adjacent springs in the middle Tennessee River drainage in Alabama, U.

🌿 Ecology

Zone Preferences
💧 Freshwater
Migration
Non-migratory
Trophic Level
3.4±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01122 × L3.04 (TL)
Dorsal Spines
2
Dorsal Rays
11
Anal Spines
2
Anal Rays
7

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Fusiform / normal
Climate Zone
Subtropical
Described By
Mayden, 1993

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