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🌊 Marine Data Deficient 🌡️ Tropical

Sri Lankan flathead

Thysanophrys tricaudata Knapp, 2013
Max Length
11.7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
17.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Sri Lankan flathead (Thysanophrys tricaudata), first described by Knapp, 2013 is a small fish in the family Platycephalidae (order Perciformes). Adults typically reach 11.70 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Data Deficient.

Scientific Name
Thysanophrys tricaudata
Authority
Knapp, 2013
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
DD
Max Length
11.7 cm
Trophic Level
3.6
Resilience
High
Vulnerability
17.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 8; Dorsal soft rays (total): 11; Anal soft rays: 12; Vertebrae: 27. This species of is characterized by the following: no papillae on the upper eye; diagonal scale count 4-5: D fin I,VII, A 11; single preocular and preorbital spines; short snout, its length in HL 3.7-4.0 times; caudal fin with 3 dark bars and a dark saddle crossing back under the entire D1 fin .: elongated.

🌀 Behaviour

Behavioural data for Sri Lankan flathead is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; reef-associated; depth range ? - 15 m . Tropical Indian Ocean: Sri Lanka.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.6±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.00457 × L3.09 (TL)
Max TL
11.7cm
Dorsal Spines
8
Dorsal Rays
11
Anal Rays
12
Vertebrae
27

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2017

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
17.00/100
Low vulnerability
Trophic Level
3.6
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Knapp, 2013

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