tenuis, Callionymus (Calliurichthys) Fricke [R.] 1981:387, Fig. 1 [Annali del Museo Civico di Storia Naturale `Giacomo Doria' v. 83; ref. 8601] South Nilandu Atoll, Maldives, Indian Ocean. Holotype (unique): FMNH 78916. Type catalog: Fricke 1982:69 [ref. 5432], Ibarra & Stewart 1987:20 [ref. 12367]. May use Pseudocalliurichthys or Callionymus; authors differ. •Valid as Callionymus tenuis Fricke 1981 -- (Fricke 1982:69 [ref. 5432], Fricke 1983:449 [ref. 8349], Fricke 2002:43 [ref. 26547], Fricke et al. 2014:10 [ref. 33442], Fricke & Anderson 2022:458 [ref. 39659]). Current status: Valid as Callionymus tenuis Fricke 1981. Callionymidae. Distribution: Western Indian Ocean: Maldives endemic. Habitat: marine.