Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Aulopiformes (Grinners) >
Synodontidae (Lizardfishes) > Synodontinae
Etymology: Synodus: Greek, syn, symphysis = grown together + Greek, odous = teeth (Ref. 45335); autumnus: Named for its body color, which is reminiscent of shrub and tree colors that change in autumn.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 3 - 33 m (Ref. 137743). Tropical
Indo-Pacific: from eastern Indian in Australia and Indonesia, north to Japan and Taiwan, including the Philippines, Palau, Marshall Islands, Timor-Leste, Papua New Guinea, Tonga, and the Hawaiian Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 9.7 cm SL male/unsexed; (Ref. 137743)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 11 - 13; Anal soft rays: 8 - 10; Vertebrae: 49 - 52. This species is distinguished by the following set of characters: D 11-13; A 8-10; lateral-line scales 49-51; scale rows above lateral line 3.5, below it 4.5; vertebrae 49-52; anterior gill rakers 22-29; peritoneal spots 0-5; anterior palatine teeth in a discrete group, longer than posterior palatine teeth; anterior nostril flap (ANF) long and broad, leaf-like, extending above and behind posterior margin of posterior nostril when laid back; posterior process of the pelvic girdle is wide; posterior part of preopercle with scales. Colouration: body with five reddish saddle-like blotches; lateral surface below lateral line with a straight row of brown blotches when fresh (Ref. 137743).
Body shape (shape guide): elongated; Cross section: oval.
Found in inshore areas with coral or rocky reefs and boulders (Ref. 137743).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Furuhashi, R. and H. Motomura, 2025. Synodus autumnus, a new species of lizardfish (Aulopiformes, Synodontidae) from the Indo-Pacific region, and a reassessment of distributional records of Synodus rubromarmoratus. ZooKeys 1243:191-206. (Ref. 137743)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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