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Diadromous Least Concern 🌡️ Tropical

Leaftail croaker

Johnius trachycephalus Bleeker, 1851
Max Length
13 cm
Max Weight
Lifespan
Trophic Level
3.4
Depth
Climate
Tropical
Resilience
High
Vulnerability
14.00/100
Typical Length
10 cm
Depth Zone

📖 Overview

Leaftail croaker (Johnius trachycephalus) is a ray-finned fish of the family Sciaenidae. It inhabits diadromous, migrating between freshwater and the sea waters. This species can reach a maximum total length of 13 cm. With a trophic level of 3.4, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Johnius trachycephalus
Authority
Bleeker, 1851
Habitat
Diadromous
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
13 cm
Trophic Level
3.4
Resilience
High
Vulnerability
14.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 9 - 10; Dorsal soft rays (total): 24 - 27; Anal spines: 2; Anal soft rays: 6 - 7. : fusiform / normal.

🌀 Behaviour

Behavioural data for Leaftail croaker is currently being reviewed.

🦐 Diet

Diet information for Leaftail croaker is currently being compiled.

🥚 Reproduction

Reproduction data for Leaftail croaker is currently being compiled.

🌍 Habitat & Distribution

Marine; freshwater; brackish; benthopelagic. Tropical

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish
Trophic Level
3.4±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00891 × L3.07 (TL)
Max TL
13cm
Dorsal Spines
10
Dorsal Rays
26
Anal Spines
2
Anal Rays
7

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2016

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
14.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Bleeker, 1851

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Leaftail Croaker
🌍CES smuhoun mělčinový
🇷🇺Russian Индокитайский джоний
🌍THA ปลาจวดหูดำ

Scientific Synonyms

Scientific Name Author Year Status
Corvina trachycephalus Bleeker 1851 Synonym
Otolithoides siamensis Fowler 1934 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) — 2 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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