jonklaasi, Sicyopus Klausewitz [W.] & Henrich [S.] 1986:117, Figs. 2-3, 9-12 [Revue française d'Aquariologie Herpétologie v. 12 (no. 4) [for 1985]; ref. 5214] Fast flowing mountain stream at Atweltota, 5 kilometers from Badurelia, Sabaragamuwa Province, Sri Lanka. Holotype: SMF 20398. Paratypes: NSMT-P 44112 (2), 44113 (2); SMF 20399 (1), 20400-401 (2, 3), 20402 (1), 20403-04 (6, 2), 20411 (4), 20427 (now 2). Available and not the same as Gobius jonklaasi Axelrod 1972. Secondary homonym of Sicyopus jonklaasi (Axelrod 1972) if the latter is a valid species in Sicyopus. •Valid as Sicyopus jonklaasi Klausewitz & Henrich 1986 -- (Pethiyagoda 1991:255 [ref. 20075], Maugé et al. 1992:228 [ref. 19910], Watson 1995:267 [ref. 21888], Watson 1998:70 [ref. 23640], Watson 1999:103 [ref. 24143], Keith et al. 2011:2726 [ref. 31651], Keith et al. 2014:174 [ref. 33540], Keith et al. 2015:146 [ref. 34328], Keith et al. 2019:166 [ref. 36794]). Current status: Valid as Sicyopus jonklaasi Klausewitz & Henrich 1986. Oxudercidae: Sicydiinae. Distribution: Sri Lanka [supposed to be amphidromous]. Habitat: freshwater, brackish, marine.