Australian no-line scorpionfish

📖 Overview

Australian no-line scorpionfish (Phenacoscorpius longicaudalis) is a ray-finned fish of the family Scorpaenidae. It inhabits marine (saltwater) waters. This species can reach a maximum total length of 8.2 cm. It occurs at depths between 228 and 990 metres. With a trophic level of 3.5, it is a low-level carnivore, feeding on invertebrates and small organisms.

🔬 Taxonomy

🐟 Physical Description

Vertebrae: 25. This species can be distinguished from its congeners by the following set of characters: P 17-19 (mode 18), middle rays branched; GR 19-22; pored lateral-line scales 2-5; GR 19-22 (20); small slit behind 4th gill arch; no palatine teeth; 2nd preopercular spine small; nuchal and parietal spines distinct; lateral lacrimal spine usually absent; suborbital spines 4-7; head width 14.7-16.9 (mean 15.4) % of SL [33.3-37.9 (35.6) % of HL]; snout length 9.9-11.0 (10.5) % of SL [23.2-25.9 (24.4) % of HL]; orbit diameter 13.4-16.1 (15.1) % of SL [31.0-37.3 (34.9) % of HL]; caudal-fin length 25.6-29.5 (27.6) % of SL; caudalpeduncle length 19.1-23.8 (20.6) % of SL. Colouration: head dark reddish-brown; body pinkish, with numerous tiny dark spots forming 4 faint brownish saddles and tiny blackish spots on abdomen and posterior part of caudal peduncle; all fins pinkish (except pectoral fin reddish); single black blotch on posterior area of spinous dorsal fin between 6th-10th spines .Cross section: compressed.

🌀 Behaviour

Behavioural data for Australian no-line scorpionfish is currently being reviewed.

🦐 Diet

Diet information for Australian no-line scorpionfish is currently being compiled.

🥚 Reproduction

Reproduction data for Australian no-line scorpionfish is currently being compiled.

🌍 Habitat & Distribution

Marine; bathydemersal; depth range 228 - 990 m . Tropical Indian Ocean: Western Australia.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

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