Check out this info on the Bangaii.......Pterapogon kauderni Koumans, 1933
Family: Apogonidae (Cardinalfishes), subfamily: Apogoninae picture (Ptkau_u0.jpg) by Germeau, G./ Doumont, Y.
Class: Actinopterygii (ray-finned fishes)
FishBase name: Banggai cardinal fish
Max. size: 8.0 cm TL (male/unsexed; Ref. 35396)
Environment: demersal; marine
Importance: fisheries: of no interest; aquarium: commercial
Resilience: Low, minimum population doubling time 4.5 - 14 years (tm<1; Fec=12)
Distribution: Gazetteer Apparently restricted to Banggai Is., Indonesia. Threatened by extinction due to collection for the aquarium trade (Ref. 27438, 35396).
Diagnosis: Dorsal spines (total): 8-8; Dorsal soft rays (total): 14-14; Anal spines: 2-2; Anal soft rays: 13-13. Easily recorgnized by its tasseled first dorsal fin, elongate anal and second dorsal fin rays, deeply forked caudal fin and striking color pattern.
Biology: 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). Has been reared in captivity (Ref. 35417).
More info at this link http://www.fishbase.org/Summary/SpeciesSummary.cfm?genusname=Pterapogon&speciesnam e=kauderni