Flatbacked black-fin roughy
📖 Overview
Flatbacked black-fin roughy (Hoplostethus platynotus) is a ray-finned fish of the family Trachichthyidae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 23 cm. It occurs at depths between 703 and 843 metres. With a trophic level of 3.5, it is a low-level carnivore, feeding on invertebrates and small organisms.
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 5; Dorsal soft rays (total): 13; Anal spines: 3; Anal soft rays: 9; Vertebrae: 27. This species is distinguished from its congeners by the following set of characters: body soft and dusky; bony ridges on the head and fin rays delicate; body scales deciduous; gular region covered with ctenoid scales; pelvic-fin spine smooth on its anterior edge; head depth smaller than its length, 37.2%-38.6% SL or 94.7%-99.2% HL; pectoral-fin length 35.6%-37.8% SL, with tip reaching beyond vertical through anal-fin origin to middle of anal-fin base; abdominal scutes well developed, 12-16; pectoral-fin rays uniformly black, 17-19; gill rakers on outer surface of first arch 6-7 + 1 + 13-14 = 21; pre-dorsal scales 24-27; pyloric caeca 32; moderate body size 230 mm SL .Cross section: compressed.
🌀 Behaviour
Behavioural data for Flatbacked black-fin roughy is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; bathypelagic; depth range 703 - 843 m . Tropical Indian Ocean: Indonesia.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
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