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💧 Freshwater Endangered 🎣 Game Fish 🌡️ Temperate 🎣 Game Fish

Cui-ui

Chasmistes cujus Cope, 1883
Max Length
67 cm
Max Weight
2.7 kg
Lifespan
41 yrs
Trophic Level
3.1
Depth
-
Climate
Temperate
Resilience
Very low
Vulnerability
70.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Adults occur in deep water. Spawning takes place only around margin of Pyramid Lake in Nevada, USA but formerly made spectacular spawning runs up Truckee River in Nevada, USA. Populations were subject to intensive fishing in the 19th and early 20th century; habitats have been greatly altered by water development projects; species is now endangered .

Scientific Name
Chasmistes cujus
Authority
Cope, 1883
Habitat
Freshwater
Climate
Temperate
IUCN Status
EN
Max Length
67 cm
Max Weight
2.7 kg
Lifespan
41 years
Trophic Level
3.1
Resilience
Very low
Vulnerability
70.00/100
Migration
Potamodromous
Salinity
0–0.5 ppt

🐟 Physical Description

Physical description for Cui-ui is currently being compiled.

🌀 Behaviour

Behavioural data for Cui-ui 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 . Temperate; 41°N - 40°N North America: Pyramid and Winnemucca lakes in Nevada, USA.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Potamodromous
Trophic Level
3.1±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00537 × L3.05 (TL)
Max TL
67cm
Max Weight
2,700g

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Endangered
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
70.00/100
High vulnerability
Trophic Level
3.1
Predator
Climate Zone
Temperate
Described By
Cope, 1883

🎣 Angling Guide

Difficulty
Beginner
Fight Rating
strong pulls with head-shakes
Best Seasons
spring,summer,fall
Best Time
incoming tide, dawn and dusk
Line Weight
15-30
Rod Type
medium-heavy spinning
Hook Size
2/0-5/0
Catch & Release
✓ Recommended
Best Months
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Techniques
bottom fishing popping cork soft plastics live bait
Bait & Lures
live shrimp cut mullet soft plastic paddle-tails popping corks
Recommended Tackle
  • medium-heavy 7ft spinning rod
  • 30-50 lb braid
  • fluorocarbon leader
Where to Find Them
  • grass flats
  • oyster bars
  • marsh drains
  • deeper channel edges
Tips & Tricks
Popping cork technique attracts fish from distance. Fish moving tides.
Catch & Release Tips

Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.

Regulations Summary

⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.

📊 Population Dynamics

Year Region Index Notes
- - -

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Cui-ui
🌍CES pakaprovec nevadský

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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