Badis singenensis is with the following combination of characters: a conspicuous black blotch posterodorsally on opercle, at the base of opercle spine, round and usually covering portion of several scales; three distinct dark blotches at dorsal fin base, first blotch behind third spine, second behind sixth dorsal spine and third behind the fifth and sixth soft dorsal ray; another distinct black blotch at the base of anal fin behind the fifth soft anal fin ray; tooth plate count 5; scales in lateral row 25-26; interorbital width 9.2–13.3% SL; upper jaw length 7.6–8.8% SL; lower jaw length 9.4–10.2% SL; head length 30.2–34.6% SL (Ref. 87892).