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💧 Freshwater Least Concern 🚨 Invasive 🐠 Aquarium ⚡ Potential pest 🌡️ Temperate

Stone moroko

Pseudorasbora parva Temminck & Schlegel, 1846
Pseudorasbora Parva (Pseudorasbora parva)
Pseudorasbora Parva (Pseudorasbora parva)
Max Length
12.5 cm
Max Weight
-
Lifespan
5 yrs
Trophic Level
3.1
Depth
-
Climate
Temperate
Resilience
Medium
Vulnerability
29.00/100
Typical Length
8 cm
Depth Zone
-

📖 Overview

Found in a wide variety of habitats, most abundantly in well vegetated small channels, ponds and small lakes . Adults occur in cool running water. Feed on small insects, fish and fish eggs , and plant material . Usually breed in habitats with still or very slow-flowing water . Females spawn 3-4 times in a season . Males clear the surface of the spawning site and guard the eggs until they hatch . Regarded as pest which competes with the fry of other species due to its high reproductive rate .

Scientific Name
Pseudorasbora parva
Authority
Temminck & Schlegel, 1846
Habitat
Freshwater
Climate
Temperate
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
12.5 cm
Lifespan
5 years
Trophic Level
3.1
Resilience
Medium
Vulnerability
29.00/100
Water Temp
5–22 °C

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 3; Dorsal soft rays (total): 7; Anal spines: 3; Anal soft rays: 6. Mouth superior and transverse; 6 branched anal rays; barbels absent; distal margin of dorsal convex; large adults with sexually dimorphic coloration .: fusiform / normal.

🌀 Behaviour

Behavioural data for Stone moroko is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

Size at Maturity
3cm TL

Nests under stones and the male cleans the cavity with its pearl organs. Eggs adhere to the ceiling of the cavity. The male leaves the nest before the eggs hatch. Females spawn 3-4 times during a season .

🌍 Habitat & Distribution

Freshwater; brackish; benthopelagic; pH range: ? - 7.0; dH range: ? - 15. Temperate; 5°C - 22°C ; 54°N - 22°N, 110°E - 141°E

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish
Trophic Level
3.1±0.1
Food Items

small insects, fish and fish eggs (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00776 × L3.13 (TL)
Max TL
12.5cm
Dorsal Spines
3
Dorsal Rays
7
Anal Spines
3
Anal Rays
6

🌡️ Water Parameters & Tolerance

Temperature Range
5–22°C

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
29.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Fusiform / normal
Climate Zone
Temperate
Described By
Temminck & Schlegel, 1846

🚨 Invasive Species Impact

Status
Established
Ecological Impact
Moderate
Origin
various
How Introduced
multiple pathways including aquaculture escape and intentional stocking
First Recorded
1950
Invaded Regions
multiple regions outside native range
Ecological Impacts
  • competition with native species
  • habitat modification
Economic Impacts
  • management and control costs
  • fishery impacts in some areas
Affected Native Species
various native fish species
Control Methods

Prevention of further spread through import bans, targeted removal in sensitive areas.

Management Status

Monitoring and containment programs in place.

References: Compiled from IUCN Global Invasive Species Database, USGS Nonindigenous Aquatic Species database, and CABI Invasive Species Compendium.

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Stone moroco · Stone moroko · Stone moroko, Topmouth gudgeon · Stone morokos · Topmouth Gudgeon · Topmouth Gudgeon (Clicker Barb, False Harlequin)
🌍BEL Chebachok amurskyj
🌍CES střevlička východní
🇩🇰Danish Båndgrundling
🇩🇪German Blaubandbärbling · Blaubandbärbling, Asiatischer Gründling
🇫🇷French Goujon asiatique · Pseudorasbora · Pseudorasbora, Goujon asiatique · goujon asiatique, pseudorasbora
🇭🇺Hungarian Kinai razbóra
🇮🇹Italian Pseudorasbora
🇯🇵Japanese Motsugo · モツゴ
🇰🇷Korean 참 붕어
🇳🇱Dutch Blauwband · Blauwband(-grondel) · blauwbandgrondel · blauwbandgrondel, blauwband
🇵🇱Polish Kielb amurski
🌍RON Murgoi baltat
🇷🇺Russian Чебачок амурский
🌍SQI notaku
🇸🇪Swedish bandslätting
🌍UKR Чебачок амурський
🇨🇳Chinese 尖嘴仔 · 尖嘴魚仔 · 罗汉鱼 · 羅漢魚 · 車栓仔 · 麥穗魚 · 麦穗鱼

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 953 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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