digressus, Monopterus Gopi [K. C.] 2002:137, Figs. 1-6; Pl. 1 [Records of the Zoological Survey of India v. 100 (pt 1-2); ref. 27553] Homestead well at Kuthiravattom, a suburban locality of Calicut, Kerala, India, elevation 40 meters. Holotype: ZSI-WGFSR 10684. Paratypes: (7). •Valid as Monopterus digressus Gopi 2002 -- (Britz et al. 2016:321 [ref. 34914]). •Valid as Rakthamichthys digressus (Gopi 2002) -- (Britz et al. 2020:232 [ref. 38035], Praveenraj et al. 2021:101 [ref. 38679]). Current status: Valid as Rakthamichthys digressus (Gopi 2002). Synbranchidae. Distribution: South Asia: aquifer systems of the northwestern Western Ghats, Kerala, India. Habitat: freshwater.