Actinopteri (ray-finned fishes) > Aulopiformes
(Grinners) > Synodontidae
(Lizardfishes) > Synodontinae
Etymology: Synodus: Greek, syn, symphysis = grown together + Greek, odous = teeth (Ref. 45335); isolatus: Name refers to its type locality, the Easter I., the most isolated island of the Indo-Pacific region. More on author: Randall.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 10 - 18 m (Ref. 80927), usually - m (Ref. ). Tropical; 0°C -
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Southeast Pacific: Easter Island.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 20.2 cm SL male/unsexed; (Ref. 80927); 24.1 cm SL (female)
Morphology | Morphometrics
soft rays: 9 - 10. This species is distinct in having the following characters: D 14-15; A 9-10; pectoral rays 12-14; lateral-line scales 57-59; 4½ or 5 scales between lateral line and base of dorsal fin; median predorsal scales 15-16; vertebrae 59-60, predorsal 15-15.5; peritoneal spots 1-8; anterior palatine teeth of inner row longer than posterior teeth; preopercle fully scaled; posterior flap of anterior nostril leaf-like and short, just reaching or extending slightly beyond rear edge of posterior nostril when laid back; depth of body 6.6-7.45 in SL; pectoral fins reaching well posterior to a line connecting dorsal- and pelvic-fin origins, fin length 2.1-2.4 in HL; alcohol preserved color pale brown, body with 8 dark-edged brown bars, each with 3 constrictions, 2 above and 1 below lateral line; even-numbered bars darker; 2 irregular dark brown bars across lips, larger one below eye, the other just before corner of mouth; a pair of very small black spots dorsally at tip of snout, each followed by a dark brown line, the 2 lines merging posteriorly on snout; 2 dark brown spots on adipose fin; remaining fins pale, anterior dorsal fin rays with faint dark spots; when fresh, the color is orangish brown dorsally, white ventrally, white spaces between dark bars on body just above lateral line with horizontal row of 2-4 small dark brown blotches, 1 per scale ; white spaces below lateral line with 2 small interconnected vertically aligned reddish orange blotches; rows of red spots on rays of dorsal, anal and caudal fins; 2 broad black bands across lips; irregular red cross bands on caudal fin lobes (Ref. 80927).
Collected on rock and sandy bottom with rotenone and with about 250 m hook and line (Ref. 80927).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Randall, J.E., 2009. Five new Indo-Pacific lizardfishes of the genus Synodus (Aulopiformes: Synodontidae). Zoological Studies 48(3):407-417. (Ref. 80927)
IUCN Red List Status (Ref. 124695)
Threat to humans
CountriesFAO areasEcosystemsOccurrencesIntroductionsStocksEcologyDietFood itemsFood consumptionRation
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00213 - 0.00936), b=3.16 (2.99 - 3.33), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.2 ±0.8 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.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (25 of 100) .