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💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Temperate

Belica

Leucaspius delineatus Heckel, 1843
Max Length
9 cm
Max Weight
-
Lifespan
2 yrs
Trophic Level
3.2
Depth
0–1 m
Climate
Temperate
Resilience
Medium
Vulnerability
29.00/100
Typical Length
6 cm
Depth Zone
pelagic

📖 Overview

Inhabits lowland riverine habitats especially oxbows and other water bodies only connected to rivers during floods. Often encountered in ponds, steppe lakes and small water bodies not connected to rivers . Occurs in large schools which are most numerous in autumn. Found between weeds in shallow pools and creeks, shallow lakes, peat and clay excavations and canals. It is exposed to the stormy flow of water (in spring, autumn and winter), but usually choose quite places like small bays, plots behind bottom stones extending out of water and concrete foundations of bridges. In autumn, the schools of fish keep to the surface and rarely go to the pelagic zone. Towards winter, the schools break up and the number of fish per unit of river square decreases rapidly ; they spend the winter in deeper waters . Feeds on phytoplankton and zooplankton and on flying insects . Spawns among vegetation . Aquarium keeping: at least 10 individuals; minimum aquarium size 100 cm; not recommended for home aquariums . Scales were utilized for production of Essence d'Orient, which was used for coating artificial pearls. Locally threatened due to draining of wetlands. Reaches up to about 9 cm SL .

Scientific Name
Leucaspius delineatus
Authority
Heckel, 1843
Habitat
Freshwater
Climate
Temperate
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
9 cm
Lifespan
2 years
Depth Range
0–1 m
Trophic Level
3.2
Resilience
Medium
Vulnerability
29.00/100
Migration
Potamodromous
Water Temp
2–32 °C

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 2 - 3; Dorsal soft rays (total): 7 - 9; Anal spines: 3; Anal soft rays: 10 - 13; Vertebrae: 36 - 42. Diagnosed from other cyprinids in central and eastern Europe by having incomplete lateral line with about 8-12 pored scales, keel covered by scales between pelvic origin and anus, mouth superior, and 11-13½ branched anal rays . A small fish with large silvery scales and an inconspicuous intense silvery band along each side. Lateral line incomplete, sometimes absent, with perforated scales. Anal fin longer than dorsal fin. Mouth turns upwards. The lower edge of the body between the pelvic fins and the vent forms a sharp keel. The scales are very loosely attached and fall away if the fish is handled. Also Ref. 40476.: fusiform / normal; Cross section: oval.

🌀 Behaviour

Behavioural data for Belica is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Territorial males clean the spawning sites and guard the eggs which are attached in strings around roots, reeds, aquatic vegetation or any material drifting on the water surface . When males tend the clutch, which is usually located on the stem of a water plant, they provide the clutch with fresh water by nudging the water plant. In addition, they spread an anti-bacterial fluid over the eggs . If possible, some fish will enter streams for spawning.

🌍 Habitat & Distribution

Freshwater; brackish; pelagic; pH range: 6.0 - 10.0; dH range: ? - 15; potamodromous ; depth range 0 - 1 m . Temperate; 2°C - 32°C ; 64°N - 38°N, 1°E - 60°E south to Rioni drainage, northern and western Caspian basin (south to Kura drainage); Aegean Sea basin (from Maritsa to Nestos).

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish 🐟 Pelagic
Migration
Potamodromous
Trophic Level
3.2±0.4
🐠 Schooling
Food Items

phytoplankton and zooplankton and on flying insects (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00724 × L3.13 (TL)
Max TL
9cm
Dorsal Spines
3
Dorsal Rays
8
Anal Spines
3
Anal Rays
12
Vertebrae
39

🌡️ Water Parameters & Tolerance

Temperature Range
2–32°C
pH Range
6–10

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2022

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
29.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Fusiform / normal
Climate Zone
Temperate
Described By
Heckel, 1843

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