Actinopterygii (ray-finned fishes) > Aulopiformes
(Grinners) > Scopelarchidae
Etymology: Rosenblattichthys: Because of Richard Rosenblatt, ichthyologist os Scripp Institution of Oceanography in La Jolla; hubbsi: Named after Carl L. Hubbs in recognition of his numerous contributions to ichthyology (Ref. 40783).
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-oceanic; oceanodromous (Ref. 51243); depth range 0 - 657 m (Ref. 58302). Subtropical
Atlantic, Indian and Pacific: in subtropical waters; unknown from the central South Pacific and the Mediterranean Sea. Eastern Central Atlantic: known from only 3 stations, ca 24°N to 2.5°S, none from the Gulf of Guinea, Benguela Current area.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.5 cm SL male/unsexed; (Ref. 10755)
Morphology | Morphometrics
soft rays: 23 - 25;
Vertebrae: 49. Color in alcohol: more or less yellow-brown, with intense pigmentation outlining scale pockets; pectoral and pelvic fins covered with small, scattered melanophores; black streak bordering anterior margin of eye (Ref. 6601).
Oceanic, mesopelagic or bathypelagic species (Ref. 6601). The single known adult (holotype) was taken in haul between 657 to 0 m; most larvae have been taken in haul in the upper 500 m and in waters as shallow as 60 m. Probably feeds on other midwater fishes (Ref. 6691). Presumed to be synchronous hermaphrodites (Ref. 10755). Also Ref. 58302.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Johnson, R.K., 1990. Scopelarchidae. p. 393-397. In J. C. Quero, J. C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 10755)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 11.9 - 23.7, mean 17 (based on 86 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00142 - 0.00847), b=3.15 (2.93 - 3.37), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.2 ±0.73 se; Based on food items.
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .