Taeniamia biguttata (Lachner, 1951)
Twinspot cardinalfish
photo by Ryanskiy, A.

Family:  Apogonidae (Cardinalfishes), subfamily: Apogoninae
Max. size:  11 cm TL (male/unsexed)
Environment:  reef-associated; depth range 0 - 33 m
Distribution:  Western Pacific: Sumatra to Tonga and Vanuatu, north to the Ryukyu Islands and south to Australia; also Palau and Mariana Islands in Micronesia.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 9-9; Anal spines: 2-2; Anal soft rays: 14-19. Diagnosis: Dorsal rays VII,9; anal rays 11,14-19 (usually 16-18); pectoral rays 14 (rarely 13 or 15). Lateral-line scales 25 + 3-5. Median predorsal scales 5-6 (usually 6). Gill rakers 5-7 + 15-18 (total, 20-24). Body depth 2.3-2.85 in SL, and body width 2.3-2.7 in the depth; eye diameter 2.7-3.1 in head length; first dorsal spine 2.0-2.9 in second spine; second dorsal spine 2.1-2.6, and third dorsal spine 2.2-2.7 in head length; spine of second dorsal fin 2.3-2.6, and second anal spine 2.5-2.9 in head length; pelvic-fin length 4.3-5.3, and caudal-peduncle length 4.9-5.9 in SL. Distance from insertion of pelvic spine to anal-fin origin 4.2-5.5 in SL. Posterior preopercular edge fully serrate or nearly so; serrae on upper part usually minute, rarely absent; ventral preopercular edge serrate on posterior two-thirds. Scaly sheath along anal-fin base well developed (Ref. 54391). Description: Large dark spot on the upper corner of the operculum is distinctive (Ref. 37816, 48635). A marginally smaller one on caudal base is present. However, the latter can be turned on or off at will. Usually a broad angular band below the eye (Ref. 48635).
Biology:  Occurs in inshore reefs of bays or lagoons, typically hovering in small groups in the recesses of caves (Ref. 1602, 48635).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (120744)
Threat to humans:  harmless
Country info:   

Entered by: Capuli, Estelita Emily - 12.06.92
Modified by: Capuli, Estelita Emily - 13.06.14
Checked by: Binohlan, Crispina B. - 27.08.94

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