Classification / Names
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Teleostei (teleosts) >
Aulopiformes (Grinners) >
Synodontidae (Lizardfishes) > Synodontinae
Etymology: Synodus: Greek, syn, symphysis = grown together + Greek, odous = teeth (Ref. 45335); lautus: Name from Latin 'lautus', referring to the bright body color of specimens.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 60 - 200 m (Ref. 137548). Temperate
Distribution
Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Northwest Pacific: Japan.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 15.4 cm SL male/unsexed; (Ref. 137548)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 11 - 13; Anal soft rays: 8 - 10; Vertebrae: 56 - 59. The species is distinguished by the following set of characters. D 11-13; A 8-10; lateral-line scales 56-59; scale rows above lateral line 3-5; vertebrae 56-59; anterior gill-rakers 30-38; pseudobranchial filaments 21-28; peritoneal spots 14-17; palatine teeth uniform in length and size; posterior part of preopercle is scaled; anterior nostril flap (ANF) short, round or triangular, and not reaching rear margin of posterior nostril when laid back; ANF length/ inter-nostril distance (IND) 0.33-0.75 (mean 0.54); snout is moderately pointed in lateral view; pelvic fin moderately short, its length 21.6-24.0% SL; posterior process of pelvic girdle is wide. Colouration: when fresh, it is orange or orangish-brown dorsally, white ventrally, eight doughnut-shaped dark orange blotches along body axis, some continuous with saddle-shaped blotches on dorsum; pelvic-fin rays white, fin membranes transparent, no additional markings; caudal fin with broad yellowish-orange bands on each lobe; when in alcohol, body pale, with irregular dark pigmentation above lateral line (Ref. 137548).
Body shape (shape guide): elongated; Cross section: circular.
Inhabits sandy gravel bottoms and boulders. The body color of this species varies, with some individuals collected being darker and some are orange red at relatively shallow depths (60-90 m), whereas the reddish individuals were collected somewhat deeper (90-200 m), apparently
evidence of protective coloration, The red color being is less visible in deeper water (Ref. 137548).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Furuhashi, R. and H. Motomura, 2025. A new species of Synodus from southern Japan, with a redescription of Synodus usitatus Cressey 1981 (Teleostei: Aulopiformes: Synodontidae). Ichthyol. Res. (2025):1-15. (Ref. 137548)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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