Nectamia, D.S.Jordan, 1917

Fraser, Thomas H., 2008, Cardinalfishes of the genus Nectamia (Apogonidae, Perciformes) from the Indo-Pacific region with descriptions of four new species, Zootaxa 1691 (1), pp. 1-52 : 7-8

Key to the adult species of the Nectamia

1. Oblique cheek mark expanded near eye; basicaudal spot, saddle or bar; body depth generally greater than 42% of standard length ................................................................................................................................ 2

- Oblique cheek mark narrow throughout length; basicaudal spot central and diffuse in adults; body depth generally less than 42% of standard length. Indo-Central Pacific................................................................. ................................................................................................ Nectamia fusca ( Quoy and Gaimard, 1824) .

2. Lobes of the caudal fin with dark bands near upper and lower edges ......................................................... 3

- Caudal fin dusky, no dark bands in lobes near upper and lower edges ....................................................... 6

3. Well developed light bars on side of body, may have narrow or broad dark areas between the light bars. 4

- No well developed light bars, occasionally a few faint light bars. Western Indian - Central Pacific............ .......................................................................................................... Nectamia savayensis ( Günther, 1872)

4. Light bar present on the opercle flap, a few narrow light bars on body, dorsal saddles under the first and second dorsal fins. West Pacific ................................................................................ Nectamia similis n.sp.

- No bar on the opercle flap, no dorsal saddle under the first and second dorsal fins ................................... 5

5. Pale bars with wide darker area on body, black caudal-peduncle saddle extends below lateral line but not a complete uniform band. Red Sea-Gulf of Aden .. Nectamia zebrinus ( Fraser, Randall and Lachner, 1999) .

- Caudal-peduncle mark above lateral-line; pale bars with narrow dark bars on body. Indian-Central Pacific .................................................................................................................................. Nectamia luxuria n.sp.

6. Dark caudal-peduncle band extend below lateral-line scales; dorsal saddles present or faint ................... 7

- No pale bars; no dorsal saddles; broad cheek mark. Red Sea ............ Nectamia annularis (Rüppell, 1829) .

7. Two dorsal saddles, no pale bars on body ................................................................................................... 8

- Dorsal saddle present under second dorsal fin; a few faint pale bars sometimes present. West Pacific ....... ...................................................................................................................................... Nectamia viria n.sp.

8. Total gill rakers and rudiments usually 26–29. West Pacific.......... Nectamia bandanensis ( Bleeker, 1854) .

- Total gill rakers and rudiments usually 24–27. South China Sea ............................ Nectamia ignitops n.sp.