Classification / Names
Common names from other countries
Main reference
Size / Weight / Age
Max length : 7.0 cm SL male/unsexed; (Ref. 559)
Environment
Marine; reef-associated; depth range 0 - 20 m (Ref. 90102)
Climate / Range
Subtropical, preferred ?
Distribution
Western Pacific: Japan (Ryukyu Is.), Taiwan to northern Philippines, southwards to about 10°N. Further south, across the equator, iti is replaced by Diancistrus alleni.
Countries | FAO areas | Ecosystems | Occurrences | Introductions
Short description
Dorsal
spines
(total): 0;
Dorsal
soft rays
(total): 74-85;
Anal
spines: 0;
Anal
soft rays: 58 - 69;
Vertebrae: 43 - 45. Diagnosis: This species is distinguished by the following: Vertebrae 11+32-34=43-45, dorsal fin rays 74-85 (usually >77), anal fin rays 58-69, D/V 6 (rarely 7); eyes moderately large (2.4-3.4% SL); outer pseudoclasper with hook-shaped extension oriented backward at 90° angle and slightly bent outwards, with a rounded tip; inner pseudoclasper short, joined to outer pseudoclasper anteriorly, with supporter, with small hook and wide thin flap at its base; scale patch on cheek with 5-6 scale rows on upper cheek, scales on operculum only above opercular spine, 3-7 scales in 2 rows; head profile slender, broad; otolith length to sulcus length about 2.0, sulcus not inclined (Ref. 57884).
IUCN Red List Status (Ref. 115185)
Threat to humans
Harmless
Human uses
Fisheries: of no interest; aquarium: commercial
More information
Age/SizeGrowthLength-weightLength-lengthLength-frequenciesMorphometricsMorphologyLarvaeLarval dynamicsRecruitmentAbundance
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Tools
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Internet sources
Estimates of some properties based on models
Phylogenetic diversity index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
Trophic Level
3.2 ±0.5 se; Based on size and trophs of closest relatives
Resilience
Low, minimum population doubling time 4.5 - 14 years (Assuming Fec < 100)
Vulnerability
Low vulnerability (13 of 100)
Price category