Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Apogonidae
(Cardinalfishes) > Apogoninae
Etymology: Pterapogon: Greek, pteron = wing, fin + Greek, pogon = beard (Ref. 45335).
Environment / Climate / Range
Marine; demersal; depth range 0 - 16 m (Ref. 90102), usually 1 - 2 m (Ref. 9936). Tropical; 1°S - 2°S, 123°E - 124°E
Length at first maturity / Size / Weight / Age
Maturity: Lm 4.1  range ? - ? cm
Max length : 8.6 cm TL (female); max. published weight: 0.00 g
Western Pacific: Apparently restricted to Banggai Islands, Indonesia. Also found in several small islands off nearby eastern Taliabu Island and Luwuk vicinity (Ref. 90102). Threatened by extinction due to collection for the aquarium trade (Ref. 27438, 35396).
Proposal to be listed in CITES Appendix II was submitted (Ref. 87100).
Common around the jetty, in silty sand bottoms with seagrass (Enhalus acoroides). Associated with Diadema setosum, the long-spined sea urchins. Individuals of 2 to 60 hover directly above the urchins, with the younger ones about 2-3 cm SL staying closer to the urchins. The fish retreat among the spines when threatened. Probably feed on small benthic and planktonic crustaceans at night. Male incubates the eggs until hatching; the large egg about 2.5 mm in diameter, with the young remaining within the mouth cavity for undetermined period after hatching (Ref. 9936, 48635). Newly hatched larvae have no planktonic period (Ref. 35886). Juveniles also use anemones for protection (Ref. 45560, 48635). Has been reared in captivity (Ref. 35417).
The male takes the eggs into its mouth where these and the larvae remain until young fish of about 8mm SL are released. Distinct pairing during courtship and spawning (Ref. 205). Also Ref. 240.
Allen, G.R. and R.C. Steene, 1995. Notes on the ecology and behaviour of the Indonesian cardinalfish (Apogonidae) Pterapogon kauderni Koumans. Rev. Fr. Aquariol. 22(1-2):7-10. (Ref. 9936)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: of no interest; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01950 (0.01070 - 0.03554), b=2.93 (2.77 - 3.09), based on LWR estimates for species & (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.41 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (tm<1; Fec=12-40; assuming multiple spawning).
Vulnerability (Ref. 59153
): Moderate vulnerability (36 of 100) .