Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Perciformes/Serranoidei (Groupers) >
Anthiadidae (Fairy basslets or Streamer basses)
Etymology: Plectranthias: Greek, plektron = anyhting to strike with, spur + Greek, anthias = a fish, Sparus aurata (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal. Subtropical
Northwest Pacific: Japan (Ryukyu Is.),
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 10; Dorsal soft rays (total): 15 - 16. This species is distinguished from its congeners by the following set of characters: D X,15-16; pectoral-fin rays 14, all unbranched; lateral line complete, with 29 or 30 pored scales; scale rows above lateral line 3; diagonal rows of large scales on cheek between eye and corner of preopercle 5 or 6; preopercle with two antrorse spines on the ventral margin, 20-29 serrae on posterior margin; margins of subopercle and interopercle have a few serrae (weak in large individuals); minute flaps at tips of first to ninth dorsal-fin spines; caudal fin shallowly emarginate, some ray branches are distinctively elongated past fin margin; fourth dorsal-fin spine is the longest, its length 110.6-128.6% that of third spine. Colouration: body pinkish-white with two longitudinal rows of irregular orange-red blotches on the upper half of lateral surface when fresh (rows close together in smaller than ca. 5.0 cm SL), blotches interconnecting anteriorly on upper and lower rows, and posterior half of lower row; four faint orange-red vertical bands seen below lateral line on posterior half of body and two distinct yellow blotches on cheek in fresh specimens. body uniformly yellowish-brown with two longitudinal rows of irregular dark blotches on the upper half of lateral surface in preserved specimens (faint in small specimens) (Ref. 132559).
Cross section: compressed.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Wada, H., T. Suzuki, H. Senou and H. Motomura 2020 (10 Jan.) [ref. 37270] See ref. online, 2020. Plectranthias ryukyuensis, a new species of perchlet from the Ryukyu Islands, Japan, with a key to the Japanese species of Plectranthias (Serranidae: Anthiadinae). Ichthyol. Res. 67(2):294-307. (Ref. 132559)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
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Internet sources
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): 3.8 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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