Grallenia Arenicola

📖 Overview

Grallenia Arenicola (Grallenia arenicola) is a ray-finned fish. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 1.9 cm. It occurs at depths between 10 and 50 metres. With a trophic level of 3.1, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 7 - 8; Anal spines: 1; Anal soft rays: 7 - 8; Vertebrae: 27 - 28. This species is characterized by the following: second dorsal-fin rays I, 7-8 (usually I, 7); anal-fin rays I, 7-8 (usually I, 7); vertebrae 10+17-18=27 (usually 10+17=27); dorsal-fin spines not elongated in either sex; second dorsal fin does not reach the caudal-fin base when adpressed, length of longest ray 14.0-17.6% of SL; length of longest ray of anal fin 8.9-13.3% of SL; scales on body extending anteriorly to just behind pectoral-fin base; weak, low pelvic frenum; length of pectoral fin 20.7-25.9% of SL; caudal-peduncle length 24.6-28.6% of SL; cephalic sensory canals with pores C' (unpaired), D (unpaired), E and F'; orange line absent on dorsal fins .: elongated.

🌀 Behaviour

Behavioural data for Grallenia Arenicola is currently being reviewed.

🦐 Diet

Diet information for Grallenia Arenicola is currently being compiled.

🥚 Reproduction

Reproduction data for Grallenia Arenicola is currently being compiled.

🌍 Habitat & Distribution

Marine; reef-associated; depth range 10 - 50 m . Tropical North Pacific: Japan.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🐠 Related Species

👥 Community & Contribute