Actinopteri (ray-finned fishes) > Kurtiformes
(Nurseryfishes, cardinalfishes.) > Apogonidae
(Cardinalfishes) > Apogoninae
Etymology: Siphamia: A Swazi word, siphama, for a fish; arnazae: Named for the second author’s wife, Arnaz Mehta, who discovered the fish.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 8 - 20 m (Ref. 120588), usually - m (Ref. ). Tropical; 0°C -
Western Pacific: Papua New Guinea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.1 cm SL (female)
Morphology | Morphometrics
(total): 7 - 8;
soft rays: 8;
Vertebrae: 24. This species belonging to the S. tubulata group (with dark-dotted light organ) is distinguished by the following characters: D1 VII,9; pectoral-fin rays usually 12; tubed lateral-line scales 1-4 (usually 1-2); developed gill rakers of first gill arch 1 + 8-9; small serrae around angle of preopercle edge 8-15; light organ barely extending onto caudal peduncle, the extent 5.2–23.1 in caudal peduncle length. Colour in life generally translucent pale pinkish to reddish orange with a dense covering of variable-sized orange spots on head and anterior two-thirds of body; a prominent 'cat’s eye' black bar through eye, covering more than pupil at center, and flanked by white crescents covering remaining iris (Ref. .120588).
Found on sheltered reef slopes, the habitat consists of predominately Seriotopora hystrix coral colonies and small Acropora coral heads with close-set branches, providing shelter for groups of about 10-30 fish (Ref. 120588).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Allen, G.R. and M.V. Erdmann, 2019. Siphamia arnazae, a new species of cardinalfish (Teleostei: Apogonidae) from Papua New Guinea. J. Ocean Sci. Found. 33:1-8. (Ref. 120588)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00690 - 0.03171), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.1 ±0.4 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 (10 of 100) .