This new species is distinguished from its congeners by the following characters: a small-sized species (< 1.0 cm SL) in the long dorsal-fin type (LDF) species group and the first with only a few (4-7) and very large eggs (3.1-3.6% of SL); body elongated, slender, and not pigmented in preserved specimens; tail (postabdominal region) is distinctly shorter than abdomen; origin of the dorsal fin anterior to origin of the anal fin (LDF type); predorsal-fin length 63.1-63.5% of SL; preanal-fin length 71.2-73.0% of SL; body depth at the origin of the anal-fin 5.9-6.6% of SL; head length 14.4-15.6% of SL; head depth 7.8-8.1% of SL; eye diameter 3.3-3.6% of SL and 23.1-26.1% of the head length; pectoral radial plate length 5.6-5.8% of SL; maximum width of the pectoral radial plate 3.2-3.3% of SL and 56.9-57.1% of pectoral radial plate length; depth of the hypural late 66.7% of the urostyle length; D 16; A 13, the first anal-fin ray positioned below the 5-6th dorsal-fin ray; procurrent rays 6; swim-bladder not pigmented; premaxillary with continuous row of small, conical teeth, but zero teeth on the dentary of the holotype or five teeth (right) plus two isolated teeth (left) in the dentary of the paratype (Ref. 131039).