New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Subtropical

Nueces roundnose minnow

Dionda serena Girard, 1856
Max Length
7.7 cm
Max Weight
-
Lifespan
-
Trophic Level
2.9
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
21.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Adults inhabit rocky pools, sometimes runs, of headwaters, creeks, and small rivers. They are usually found among filamentous algae . Migratory behaviour is undetermined .

Scientific Name
Dionda serena
Authority
Girard, 1856
Habitat
Freshwater
Climate
Subtropical
IUCN Status
LC
Max Length
7.7 cm
Trophic Level
2.9
Resilience
High
Vulnerability
21.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Physical description for Nueces roundnose minnow is currently being compiled.

🌀 Behaviour

Behavioural data for Nueces roundnose minnow is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; pelagic. Subtropical North America: Upper Nueces River drainage in Texas, USA.

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Trophic Level
2.9±0.4

📐 Morphometrics

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

🌡️ Water Parameters & Tolerance

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
2.9
Omnivore / Planktivore
Climate Zone
Subtropical
Described By
Girard, 1856

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Nueces roundnose minnow ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.