Crucian carp
📖 Overview
Adults occur in shallow ponds, lakes rich in vegetation and slow moving rivers. They burrow in mud in the dry season or during winter . Usually restricted to densely vegetated backwaters and oxbows of lowland rivers. Can survive at high temperatures and at very low oxygen concentrations during summer and under ice cover . Tolerates cold, organic pollutants, and low oxygen levels in the water . Feeds all day but mainly at night on plankton, benthic invertebrates, plant materials and detritus. Usually does not occur in waters with rich ichthyofauna and abundant predatory species, but very abundant in the absence of other fish species. Spawns in dense submerged vegetation . Marketed fresh and frozen; eaten fried, broiled and baked . Live up to about 10 years. There is a gradual but continuing extirpation in many water bodies, especially in Danube drainage and central Europe, possibly to due competition with introduced Carassius gibelio in non-optimal habitats .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 3 - 4; Dorsal soft rays (total): 13 - 22; Anal spines: 2 - 3; Anal soft rays: 5 - 7; Vertebrae: 32. Diagnosed from its congeners in Europe by having the following characters: body golden-green shining color; last simple anal and dorsal rays weakly serrated; 23-33 gill rakers; lateral line with 31-36 scales; free edge of dorsal convex; anal fin usually with 6½ branched rays; and peritoneum white . Caudal fin with 18-20 rays . No barbels. The third dorsal and anal-fin rays are strong and serrated posteriorly.: fusiform / normal.
🌀 Behaviour
Behavioural data for Crucian carp is currently being reviewed.
🦐 Diet
🥚 Reproduction
Females spawn multiple times during the spawning period . Reproduction in May-June in shallow water with dense vegetation, eggs 130000-250000/female adhere to plants, hatch after 4-8 days . Individual female spawn with several males. Males follow ripe females, often with much splashing. Eggs are sticky and are attached to water plants .
🌍 Habitat & Distribution
Freshwater; brackish; demersal; potamodromous ; depth range 5 - ? m . Temperate; 2°C - 22°C ; 69°N - 35°N, 10°W - 169°E North Sea basin in Sweden and Norway.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🚨 Invasive Species Impact
- competition with native species
- habitat modification
- management and control costs
- fishery impacts in some areas
Prevention of further spread through import bans, targeted removal in sensitive areas.
Monitoring and containment programs in place.
References: Compiled from IUCN Global Invasive Species Database, USGS Nonindigenous Aquatic Species database, and CABI Invasive Species Compendium.
🎣 Angling Guide
- medium-heavy 7ft spinning rod
- 30-50 lb braid
- fluorocarbon leader
- grass flats
- oyster bars
- marsh drains
- deeper channel edges
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | Crucian · Crucian Carp · Yakut crucian carp · bronze carp |
| 🌍AZE | Qızılı daban balığı |
| 🌍BEL | Карась звычайны |
| 🌍BUL | Златиста каракуда |
| 🌍CES | Karas obecný |
| 🌍CYM | Byrbysgod · byrbysgodyn |
| 🇩🇰Danish | Almindelig karusse · Karuds · Karudse · Karusse · Søkaruds · Søkarusse |
| 🇩🇪German | Bauernkarpfen · Burretschel · Gareisel · Gareisl · Gareisle · Guratsch · Karausche · Kotbuckel · Moorkarpfen · Schneiderkarpfen · Steinkarpfen |
| 🌍ELL | Κουτσουράς |
| 🌍EST | Koger |
| 🌍FAS | کاراس |
| 🇫🇮Finnish | Ruutana |
| 🇫🇷French | Carache · Carassin · Carassin commun · Carouche · Carpe à la lune · Carreau · Cyprin · Gardon carpé · Gibèle · Meule |
| 🇭🇷Croatian | Karas |
| 🇭🇺Hungarian | Kárász · Széles kárász |
| 🇮🇹Italian | Carassio · Carpa a specchi |
| 🌍KAS | گٕنٛگ گاڈ |
| 🌍KAZ | Мөңке балық |
| 🌍LAV | Karūsa |
| 🌍LIT | Paprastasis karosas · auksinis karosas |
| 🇳🇱Dutch | Kroeskarper · Steenkarper |
| 🌍NNO | karuss · damkaruss |
| 🌍NOB | damkaruss · karuss |
| 🇳🇴Norwegian | Karuss |
| 🇵🇱Polish | Karas · Karas pospolity |
| 🇵🇹Portuguese | Pimpao · Pimpão-comum |
| 🌍RON | Caracuda · Caracuda rotunda · Caras · Carasita · Garasita |
| 🇷🇺Russian | Золотой карась · Карась золотой |
| 🌍SLK | Karas obyčajný |
| 🌍SLV | Koreselj · navadni koreselj |
| 🇪🇸Spanish | Carpin |
| 🌍SQI | Karasi · karasi i bronxtë |
| 🌍SRP | Karas · Караш |
| 🇸🇪Swedish | Ruda · dammruda · karussa · sjöruda |
| 🌍TUR | Havuz baligi · Kirmizi balik · havuz balığı |
| 🌍UKR | Золотий карась · Карась звичайний · Карась золотий |
| 🇨🇳Chinese | 黑鲫 |
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Carassius carassius carassius | Linnaeus | 1758 | Synonym |
| Carassius carassius jacuticus | Kirillov | 1956 | Heterotypic |
| Carassius charax | Lesniewski | 1837 | Synonym |
| Carassius gibelio minutus | Kessler | 1856 | Synonym |
| Carassius humilis | Heckel | 1837 | Synonym |
| Carassius linnaei | Bonaparte | 1845 | Synonym |
| Carassius linnei | Malm | 1877 | Synonym |
| Carassius linnei lacustrus | Malm | 1877 | Synonym |
| Carassius linnei piscinarum | Malm | 1877 | Synonym |
| Carassius moles | Nordmann | 1840 | Synonym |
| Carassius oblongus | Heckel & Kner | 1858 | Synonym |
| Carassius vulgaris | Nordmann | 1840 | Synonym |
| Carassius vulgaris gibbosus | Walecki | 1863 | Synonym |
| Carassius vulgaris subventrosus | Walecki | 1863 | Synonym |
| Carassius vulgarus crassior | Walecki | 1889 | Synonym |
| Carassius vulgarus | von Nordmann | 1840 | Synonym |
| Cyprinus carassius | Linnaeus | 1758 | Homotypic |
| Cyprinus charax | Lesniewski | 1837 | Synonym |
| Cyprinus gibelio minutus | Kessler | 1856 | Synonym |
| Cyprinus moles | Valenciennes | 1842 | Synonym |
🦠 Common Diseases
The following diseases are known to affect Crucian carp.
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 30 records indexed .
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