Species that contain: Eleutherochir and opercularis [ 6 ] records

goslinei, Pogonymus Rao [V. V.] 1976:27, Fig. 1 [Matsya No. 1; ref. 6857] Ennore Estuary, Madras, India. Holotype: ZSI F6853/2. Paratypes: ZSI F6854/2 (7). Type catalog: Fricke 1982:73 [ref. 5432]. •Synonym of Eleutherochir opercularis (Valenciennes 1837) -- (Fricke 1982:73 [ref. 5432], Fricke 1983:547 [ref. 8349], Talwar & Jhingran 1991:917 [ref. 20764], Fricke 2002:50 [ref. 26547], Kottelat 2013:385 [ref. 32989]). Current status: Synonym of Eleutherochir opercularis (Valenciennes 1837). Callionymidae. Habitat: marine.

kellersi, Callionymus Fowler [H. W.] & Bean [B. A.] 1927:12, Fig. 2 [Proceedings of the United States National Museum v. 71 (no. 2682); ref. 15786] Benkoelen, Sumatra, Indonesia. Holotype (unique): USNM 87935. Type catalog: Fricke 1982:73 [ref. 5432]. •Synonym of Eleutherochir opercularis (Valenciennes 1837) -- (Fricke 1982:73 [ref. 5432], Fricke 1983:547 [ref. 8349], Fricke 2002:50 [ref. 26547], Kottelat 2013:385 [ref. 32989]). Current status: Synonym of Eleutherochir opercularis (Valenciennes 1837). Callionymidae. Habitat: brackish, marine.

mccaddeni, Eleutherochir Fowler [H. W.] 1941:27, Fig. 16 [Proceedings of the United States National Museum v. 90 (no. 3106); ref. 1439] Hinunañgan Bay, Leyte, Philippines. Holotype (unique): USNM 99435. Type catalog: Fricke 1982:73 [ref. 5432]. •Synonym of Eleutherochir opercularis (Valenciennes 1837) -- (Fricke 1982:73 [ref. 5432], Fricke 1983:547 [ref. 8349], Fricke 2002:50 [ref. 26547], Kottelat 2013:385 [ref. 32989]). Current status: Synonym of Eleutherochir opercularis (Valenciennes 1837). Callionymidae. Habitat: brackish, marine.

mirus, Brachycallionymus Herre [A. W. C. T.] 1936:12 [Proceedings of the Biological Society of Washington v. 49; ref. 2124] Northern coast of Sulawesi, Indonesia. Holotype: CAS-SU 30978. Paratypes: USNM 98827-28 (2, 1). Type catalog: Böhlke 1953:103 [ref. 12291], Fricke 1982:73 [ref. 5432]. •Synonym of Eleutherochir opercularis (Valenciennes 1837) -- (Fricke 1982:73 [ref. 5432], Fricke 1983:547 [ref. 8349], Fricke 2001:3569 [ref. 26292], Fricke 2002:50 [ref. 26547], Kottelat 2013:385 [ref. 32989], Miesen et al. 2016:91 [ref. 34492]). Current status: Synonym of Eleutherochir opercularis (Valenciennes 1837). Callionymidae. Habitat: brackish, marine.

opercularioides, Callionymus Bleeker [P.] 1850:32 [Natuurkundig Tijdschrift voor Nederlandsch Indië v. 1 (no. 1); ref. 16885] Padang, western Sumatra, Indonesia. Syntypes: (14) BMNH 1880.4.21.153 (1); ?NMV 46686-87 (2), A907 (3); RMNH 4813 (5). Type catalog: Fricke 1982:73 [ref. 5432]. Bleeker's unpublished illustration reproduced in Boeseman 1983:v. 11, Pl. 424, fig. 2 [ref. 12564], Eleutherochir opercularioides. •Synonym of Eleutherochir opercularis (Valenciennes 1837) -- (Fricke 1982:73 [ref. 5432], Fricke 1983:546 [ref. 8349], Fricke 2002:50 [ref. 26547], Kottelat 2013:385 [ref. 32989]). Current status: Synonym of Eleutherochir opercularis (Valenciennes 1837). Callionymidae. Habitat: brackish, marine.

opercularis, Callionymus Valenciennes [A.] in Cuvier & Valenciennes 1837:305 [Histoire naturelle des poissons v. 12; ref. 1006] Mouth of Arian-Coupan River at Puducherry, India. Holotype (unique): MNHN A-1514. Type catalog: Fricke 1982:73 [ref. 5432], Fricke et al. 1984:106 [ref. 21539]. •Valid as Eleutherochir opercularis (Valenciennes 1837) -- (Fricke 1982:73 [ref. 5432], Fricke 1983:546 [ref. 8349], Nakabo in Masuda et al. 1984:345 [ref. 6441], Talwar & Jhingran 1991:917 [ref. 20764], Kottelat et al. 1993:131 [ref. 23448], Fricke in Randall & Lim 2000:634 [ref. 25122], Nakabo 2000:1126 [ref. 25182], Matsuura & Peristiwady in Matsuura & Peristiwady 2000:286 [ref. 27511], Fricke 2001:3560 [ref. 26292], Nakabo 2002:1126 [ref. 26193], Fricke 2002:50 [ref. 26547], Allen & Adrim 2003:56 [ref. 26830], Shao et al. 2008:260 [ref. 29952], Kottelat 2013:385 [ref. 32989], Fricke et al. 2014:154 [ref. 33932], Fricke 2016:49 [ref. 34468], Miesen et al. 2016:91 [ref. 34492], Fricke 2016:20 [ref. 34659], Fricke 2017:183 [ref. 35548], Roy et al. 2021:215 [ref. 38220], Jamandre 2023:162 [ref. 40455]). Current status: Valid as Eleutherochir opercularis (Valenciennes 1837). Callionymidae. Distribution: Eastern Indian Ocean, western Pacific: Sri Lanka and eastern India east to Philippines and New Guinea, north to Ryukyu Islands. Habitat: brackish, marine.