Polysteganus Flavodorsalis

📖 Overview

Polysteganus Flavodorsalis (Polysteganus flavodorsalis) is a ray-finned fish of the family Sparidae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 26.5 cm. It occurs at depths between 214 and 305 metres. With a trophic level of 3.9, it is a mid-level predator. It is assessed as Data Deficient on the IUCN Red List.

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 12; Dorsal soft rays (total): 10; Anal spines: 3; Anal soft rays: 8. This species is distinguished from its congeners by the following set of characters: scale rows above lateral line 6.5 and between 5th dorsal-fin spine base and lateral line 5½; pored lateral line scales 52- 53; suborbital depth obviously less than the orbit diameter (OD), 72-75% (mean 74%) of OD; dorsal-fin rays are reddish pink with bright yellow margin, anal-fin rays pinkish; no obvious lines of blue spots on body, but usually a blue iridescence in each body scale around dorsal and lateral sides of body from some angles; yellow and red membranes only on upper and lower caudal-fin lobes, respectively (these 2 colors are strongly contrasted; somewhat deeper body, 39-43 (mean 41%) of SL; without bony bulge before and above eye; its caudal fin moderately forked .: short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Polysteganus Flavodorsalis is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Marine; reef-associated; depth range 214 - 305 m . Tropical Indian Ocean: Cargados Carajos and Mascarene Plateau, Nazareth Bank.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

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