Graham's red deepwater scorpionfsh

📖 Overview

Graham's red deepwater scorpionfsh (Lythrichthys grahami) is a ray-finned fish. It inhabits marine (saltwater) waters. This species can reach a maximum total length of 14.7 cm. It occurs at depths between 690 and 700 metres. With a trophic level of 3.2, it is a low-level carnivore, feeding on invertebrates and small organisms.

🔬 Taxonomy

🐟 Physical Description

This species is distinguished by the following set of characters: scale rows between 6th dorsal-fin spine and lateral line 8-11 (usually 9); scale rows between last dorsal-fin spine and lateral line 10-12 (11); middle postorbital scale rows 3 or 4 (3); caudal-peduncle depth 7.6-8.7% (moderately 8.1%) of SL; interorbital width at vertical midline of eye 23.3-27.0% (25.2%) of HL; maxillary depth 13.3-15.5% (14.2%) of HL; lower opercular spine length 30.6-33.5% (31.9%) of HL; dorsal margin of interorbital space is slightly raised; with nasal and parietal spines; no supraocular spine; second lacrimal spine directed posteroventrally; tip of lower opercular spine beyond posterior margin of opercle (sometimes just short of margin in specimens up to ca. 8.0 cm SL); jaws with short, dense conical teeth; premaxillary teeth in 3-6 irregular rows, ca. 200 teeth in total. Colouration: body base color cardinal- to blackish-red when fresh; caudal fin uniformly pale in preserved specimens; oral surface uniformly grey (uniformly pale in specimens to ca. 10.0 cm SL) .Cross section: compressed.

🌀 Behaviour

Behavioural data for Graham's red deepwater scorpionfsh is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Marine; bathydemersal; depth range 690 - 700 m . Subtropical

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

📊 Population Risk & Fisheries

🐠 Related Species

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