Ridged-egg catshark

📖 Overview

Ridged-egg catshark (Apristurus ovicorrugatus), first described by Delva, Nakaya & Iglésias, 2023 is a large fish in the family Pentanchidae (order Carcharhiniformes). Adults typically reach 46.70 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 410 to 550 metres. It occurs in Subtropical 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 Least Concern.

🔬 Taxonomy

🐟 Physical Description

This species is distinguished by the following combination of characters: when alive/fresh, eyes with shiny white iris; head moderately long and relatively narrow, its length 23.8% LT, interorbital space 6.4% LT; snout moderately elongate, preoral length is 10.0% LT and preorbital length 10.9% LT; mouth wide, its width 9.5% LT; pelvic–anal space 5.9% LT; anal fin is large, base length 15.2% LT, posterior margin 11.5% LT; prepectoral length is relatively long, about 21.1% LT; labial furrows long, not confined to mouth corners, uppers are longer than lowers (3.8 vs. 2.4% LT); enlarged denticles absent on upper or lower caudal fin; duodenum of intestine moderately sized, intestinal spiral valves 15; monospondylous centra 35; precaudal-diplospondylous vertebrae 33; precaudal centra 68; females mature by 46.7 cm LT; egg case small (5.04-6/06 cm long), with 5-7 strong T-shaped ridges on dorsal and ventral surfaces .Cross section: angular.

🌀 Behaviour

Behavioural data for Ridged-egg catshark is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Marine; bathydemersal; depth range 410 - 550 m . Subtropical West Pacific: Australia.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

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