Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Ophidiiformes
(Cusk eels) > Bythitidae
(Viviparous brotulas) > Bythitinae
Etymology: Saccogaster: Latin, sacculus = small bag + Greek, gaster = stomach (Ref. 45335). More on author: Cohen, Nielsen.
Environment / Climate / Range
Marine; bathydemersal; depth range ? - 500 m (Ref. 34024). Deep-water, preferred ?
Southwest Atlantic: off the coast of Brazil, south of Rio de Janeiro.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.8 cm SL (female)
Morphology | Morphometrics
soft rays: 64;
Vertebrae: 54. This species is distinguished from its congeners by the following characters: 5-6 developed rakers on anterior gill arch; spineless frontal plate and ethmoid; thin and transparent skin; below the translucent head skin are numerous neuromasts arranged in five distinct clusters; no scales; 3 developed rakers on anterior gill arch are 3-4 times length of gill filaments; palatines with a row of teeth; lower angle of preoperculum with antero-ventrally directed spine; pectoral peduncle prolonged; vertebrae, precaudal 16, total 54; fin rays, D 91, Al 64 and pectoral 14 (Ref. 93007).
Rare species, known from a single specimen (Ref. 34024).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Nielsen, J.G., W. Schwarzhans and D.M. Cohen, 2012. Revisions of Hastatobythites and Saccogaster (Teleostei, Bythitidae) with three new species and a new genus. Zootaxa 3579:1-36. (Ref. 93007)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (12 of 100) .