Actinopteri (ray-finned fishes) > Eupercaria/misc
(Various families in series Eupercaria) > Sciaenidae
(Drums or croakers)
Etymology: majan: The specific name proposed for this Omani endemic is an ancient Sumerian name for Oman, about 4,000 BC.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic. Tropical
Western Indian Ocean: Oman to Iraq..
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.8 cm SL male/unsexed; (Ref. 90119); 14.7 cm SL (female)
Morphology | Morphometrics
soft rays: 8;
Vertebrae: 24. This species is distinguished by the following set of characters: upper pectoral fin base with a black axillary spot; D 29-32; A 8; scales above lateral line 6, below 11; eye diameter 22.9-28.9% HL; interorbital width 32.0-38.0% HL; gill rakers 5-6 + 15-18 = 21-24; no mental barbel, last well-developed pleural rib on 7th vertebra; 11 swim bladder appendages; vertebrae 10 + 14 = 24 (Ref. 90119).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Iwatsuki, Y., L.A. Jawad and J.M. Al-Mamry, 2012. Jonius (Johnius) majan sp. nov., a sciaenid fish (Pisces: Scianidae) from Oman, Indian Ocean. Ichthyol. Res. 59:151-155. (Ref. 90119)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
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=0.01698 (0.00652 - 0.04421), b=3.01 (2.78 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.5 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 vulnerability (16 of 100) .