Teleostei (teleosts) >
Kurtiformes (Nurseryfishes, cardinalfishes.) >
Apogonidae (Cardinalfishes) > Apogoninae
Etymology: Siphamia: A Swazi word, siphama, for a fish; cyanophthalma: This species is named cyanophthalma (Latin: “blue-eye”) with reference to the pair of blue stripes through the eye, which is an excellent field character for its recognition (Ref. 90035).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; benthopelagic; depth range ? - 31 m (Ref. 90035). Tropical
Indo-West Pacific: the Philippines, eastern Indonesia, Palau, Papua New Guinea and offshore reefs of northwestern Australia.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 2.2 cm SL (female)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 8; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 7 - 8. This species is distinguished by the following characters: D VII+I,9; A II,7-8; pectoral rays 12; tubed lateral-line scales 4-8; median predorsal scales 4-5; total gill rakers 3-4 + 9-10; developed gill rakers 1 + 6-9; gill rakers on ceratobranchial 6-7; body depth 2.25-2.6 in SL and body width 2.4-3.1 in the depth; eye diameter 2.65-3.3 in head length (HL); first dorsal spine very small 10.25-14.5 in second spine (two specimens); second dorsal spine 4.7-5.1, spine of second dorsal fin 4.1-5.2, and second anal spine 4.6-5.1, all in HL; pectoral-fin length 4.2-4.5 and pelvic-fin length 4.8-5.0 in SL; caudal-peduncle length 1.0-1.4 in distance between pelvic spine insertion and anal-fin origin; preopercular edge weakly serrate around angle, with 5-14 (usually 6-8) minute serrations; preopercular ridge smooth; tip of light organ on each side of tongue bound by membrane (Ref. 90035).
Solitary or in small groups. Found in sheltered coral reefs (Ref 90102). The smallest recorded female with visually detectable maturing eggs was 1.43 cm SL (Ref. 90035).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Gon, O. and G.R. Allen, 2012. Revision of the Indo-Pacific cardinalfish genus Siphamia (Perciformes: Apogonidae). Zootaxa 3294:1-84. (Ref. 90035)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.00680 - 0.03071), b=3.07 (2.89 - 3.25), 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.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
