Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Trachichthyiformes (Roughies) >
Trachichthyidae (Slimeheads)
Etymology: Hoplostethus: Greek, hoplon = weapon + Greek, stetho, stethion = brest; literal = to prick a little breast (Ref. 45335); platynotus: Name 'platynotus' from Greek words 'platys' and 'noton', meaning 'flat' and 'back', referring to the unique flattened and straight dorsal profile before dorsal-fin origin of the species.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; depth range 703 - 843 m (Ref. 133164). Tropical
Eastern Indian Ocean: Indonesia.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 23.0 cm SL male/unsexed; (Ref. 133164)
Short description
Identification keys | Morphology | Morphometrics
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 (Ref. 133164).
Cross section: compressed.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Su, Y., A.N. Kotlyar, H.-C. Lin, T. Kawai and H.-C. Ho, 2024. A new species of Hoplostethus from Sumatra, eastern Indian Ocean, with comments on its most similar congeners (Trachichthyiformes: Trachichthyidae). J Fish Biol.106(3):696-705. (Ref. 133164)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic level (Ref.
69278): 3.5 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (18 of 100).
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