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💧 Freshwater 🌡️ Temperate

Japanese bitterling

Rhodeus smithii Regan, 1908
Max Length
6.5 cm
Max Weight
-
Lifespan
-
Trophic Level
2.7
Depth
-
Climate
Temperate
Resilience
High
Vulnerability
22.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Japanese bitterling (Rhodeus smithii) is a ray-finned fish of the family Cyprinidae. It inhabits freshwater waters. This species can reach a maximum total length of 6.5 cm. With a trophic level of 2.7, it is an omnivore, consuming both plant and animal matter.

Scientific Name
Rhodeus smithii
Authority
Regan, 1908
Habitat
Freshwater
Climate
Temperate
Max Length
6.5 cm
Trophic Level
2.7
Resilience
High
Vulnerability
22.00/100
Water Temp
10–25 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Japanese bitterling is currently being compiled.

🌀 Behaviour

Behavioural data for Japanese bitterling is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Female has an ovipositor which is used to deposit eggs inside bivalves. Young remain in the bivalve until they can swim .

🌍 Habitat & Distribution

Freshwater; benthopelagic; pH range: 6.8 - 7.8; dH range: ? - 20. Temperate; 10°C - 25°C

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.7±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.01072 × L3.1 (TL)
Max TL
6.5cm

🌡️ Water Parameters & Tolerance

Temperature Range
10–25°C
pH Range
6.8–7.8
Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
22.00/100
Low vulnerability
Trophic Level
2.7
Omnivore / Planktivore
Climate Zone
Temperate
Described By
Regan, 1908

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Japanese bitterling · Japanese rosy bitterling
🇯🇵Japanese ニッポンバラタナゴ

Scientific Synonyms

Scientific Name Author Year Status
Achilognathus smithii Regan 1908 Synonym
Rhodeus ocellatus smithi Regan 1908 Synonym

🦠 Common Diseases

The following diseases are known to affect Japanese bitterling.

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 13 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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