Rostrum resembling the shelflike condition seen in notatus; for 4 cm SL or less, a short median horn is developed on the rostrum. It has narrower mouth and lower number of scales in the cheek lateral line series, usually 8 and in the premaxillary series 3. Pectoral fin ray usually 13. Has a flatter disk with less elevated cranium compared to parvus (Ref. 40824).