Asp
📖 Overview
Occur in open water of large and medium-sized lowland rivers and large lakes . Adults inhabit lower reaches of rivers and estuaries . Prefer to stay near bridge pillars, near tributaries, under weirs, in deep currents and overgrown parts of river and in quiet bays of river bends . One of the rare cyprinids which is piscivore; also prey on small aquatic birds. Juveniles are gregarious predators while adults hunt in small groups or are solitary. Juveniles and adults feed mainly on fish, especially on Alburnus alburnus or Osmerus eperlanus . Migrate upstream in tributaries for spawning in April-June . Spawn in fast-flowing water on gravel or submerged vegetation. Lake populations migrate to tributaries; semi-anadromous populations or individuals (Terek) forage mainly in estuaries and freshened parts of the sea, migrating to rivers only for spawning. Begins spawning migration in second half of October (Terek) and overwinters in the lower reaches of river. Hybridizes with Leuciscus idus. Threatened due to alteration of river morphology .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 3; Dorsal soft rays (total): 7 - 9; Anal spines: 3; Anal soft rays: 12 - 15. The only species of Aspius in Europe which can be diagnosed from other species of Cyprinidae in Europe by the following characters: anal fin with 12-14½ branched rays; scales on lateral line 64-76; maxilla extending beyond front margin of eye; and sharp keel between pelvic-fin and anal-fin origins covered by scales . Long shape body, laterally compressed with a long sharp head. Green back with silver to blue tints. Lighter flanks. Silver white belly. Pectoral, pelvic and anal fins grey to brown. Scale formula: 11-14/64-76/5-6 .: fusiform / normal.
🌀 Behaviour
Behavioural data for Asp is currently being reviewed.
🦐 Diet
Diet information for Asp is currently being compiled.
🥚 Reproduction
Sexual maturity is reached after 4-5 years . Reproductive success seems to be associated with low water level and high spring temperatures. Spawning occurs more than one season and lasts about 2 weeks. Deposits eggs which adhere to gravel or submerged plants .
🌍 Habitat & Distribution
Freshwater; brackish; benthopelagic; potamodromous ; depth range 10 - ? m . Temperate; 4°C - 20°C ; 66°N - 35°N, 3°E - 72°E North Sea (Weser, Elbe), Baltic Sea (southern tributaries, Norway east of Oslo, southern Sweden, Kokemären drainage in southern Finland), Black Sea, Sea of Azov and Caspian Sea; Aegean Sea basin, from Maritza to Lake Volvi drainages.
🌿 Ecology
fish, especially on Alburnus alburnus or Osmerus eperlanus (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"Asp is an edible species."
- Clear, bright eyes — cloudy eyes indicate age
- Firm flesh that springs back when pressed
- Fresh ocean smell, never strong or ammonia-like
- Bright red or pink gills, not grey or brown
- Shiny, moist skin with scales tightly attached
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
⚡ Nutrition
Per 100g cooked — Source: USDA FoodData Central
| Nutrient | Amount |
|---|---|
| Protein | 19.8 g |
| Omega-3 (total) | 669 mg |
🔬 Mercury Safety
Mercury data for Asp has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🌐 Names & Taxonomy
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Alburnus iblioides | Kessler | 1872 | Synonym |
| Aspius aspius | Linnaeus | 1758 | Synonym |
| Aspius aspius aspius | Linnaeus | 1758 | Synonym |
| Aspius aspius iblioides | Kessler | 1872 | Synonym |
| Aspius aspius taeniatus | Eichwald | 1831 | Synonym |
| Aspius erytrostomus | Kessler | 1877 | Synonym |
| Aspius linnei | Malm | 1877 | Synonym |
| Aspius rapax | Agassiz | 1835 | Synonym |
| Aspius rapax jaxartensis | Kessler | 1874 | Synonym |
| Aspius transcaucasicus | Warpachovski | 1896 | Synonym |
| Aspius transcaucasius | Warpachovski | 1896 | Synonym |
| Aspius vulgaris | Leiblein | 1853 | Synonym |
| Chondrostomus nasus | — | — | Synonym |
| Cyprinus aspius | Linnaeus | 1758 | Homotypic |
| Cyprinus rapax | Pallas | 1814 | Synonym |
| Cyprinus spec | Linnæus | 1758 | Synonym |
| Cyprinus taeniatus | Eichwald | 1831 | Synonym |
| Squalius leuciscus | Linnaeus | 1758 | Synonym |
| Squalius leuciscus elata | Fatio | 1882 | Synonym |
| Squalius leuciscus elongata | Fatio | 1882 | Synonym |
| Squalius leuciscus lateristriga | Fatio | 1882 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) — 13 records indexed .
👥 Community & Contribute
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