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💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Subtropical

Roundnose minnow

Dionda episcopa Girard, 1856
Max Length
7.7 cm
Max Weight
-
Lifespan
-
Trophic Level
2
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
21.00/100
Typical Length
5.5 cm
Depth Zone
-

📖 Overview

Adults inhabit rocky pools, sometimes runs, of headwaters, creeks, and small rivers. Often occurs among filamentous algae . They feed mainly on algae and other plants . Migratory behaviour is undetermined .

Scientific Name
Dionda episcopa
Authority
Girard, 1856
Habitat
Freshwater
Climate
Subtropical
IUCN Status
LC
Max Length
7.7 cm
Trophic Level
2
Resilience
High
Vulnerability
21.00/100
Water Temp
23–25 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Roundnose minnow is currently being compiled.

🌀 Behaviour

Behavioural data for Roundnose minnow is currently being reviewed.

🦐 Diet

algae
aquatic plants
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic; pH range: 7.4 - 8.1; dH range: 7 - 20. Subtropical; 23°C - 25°C ; 34°N - 25°N North America: Rio Grande drainage above Devils River in Texas, New Mexico and Mexico.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2
Food Items

algae and other plants (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00525 × L3.1 (TL)
Max TL
7.7cm

🌡️ Water Parameters & Tolerance

Temperature Range
23–25°C
pH Range
7.4–8.1
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
21.00/100
Low vulnerability
Trophic Level
2
Omnivore / Planktivore
Climate Zone
Subtropical
Described By
Girard, 1856

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Dionda chrysitis Girard 1856 Synonym
Dionda papalis Girard 1856 Synonym

🗺️ 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 Roundnose minnow ↗
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