Dionea) confluent with caudal fin 1b) Second dorsal fin and anal fin 2 distinctly separate from caudal fin 2a) Vomerine teeth present pelvic fin Palatogobius narrow, lacking a well-developed frenum preopercular canal pores absent 2b) Vomerine teeth absent pelvic fin 3 rounded or oval, with a well-developed frenum preopercular canal pores present or absent 3a) Top of head naked second dorsal Microgobius typically I,14-17 3b) Top of head scaled second dorsal 4 typically 1,11-13, rarely 1,14 4a) Preopercular canal pores absent, head Parrella (P. › ▆ Vomerine Teeth Patch ▆ģ) in HL lips thin teeth conical with slightly curved tips, those on upper jaw mainly on outer surface of lips teeth of upper jaw in about 4-5 irregular rows anteriorly, reduced to 1-2 rows posteriorly, where exposed when mouth closed teeth in lower jaw in about 7-8 irregular rows anteriorly, reduced to 2-3 rows posteriorly teeth generally absent on vomer and palate, except small vestigial patch of vomerine teeth on one side of holotype and two paratypes roof of mouth and upper surface of tongue covered with numerous slender papillae.
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