IDENTIFICATION Head Pores - Cephalic head canal with pores B',C,D,E,F,H' and K',L'; preopercle canal with pores M',N,O' Scales - Four basicaudal scales, ctenii not elongate; transverse scales 7-8; lateral scale rows 27-28[22-29]; scales extend to a vertical a little in front of origin of first dorsal, anterior bare area at dorsal and vental profile moderate, MCZ specimen 47616 scales extend to posterior of first dorsal only 20 in LL

Fins - D1 - VII, none filamentous; D2 - 12[11-12]; pectoral ovate with 19[18-20] rays; anal fin 10[9-10]; caudal rounded with 16 segmented rays [few specimens counted]; pelvic I,5 complete disk, oblong to ovate, extending 3/4 distance to anus.

Head - very small barbel near anterior nostril;

Papillae - A transverse pattern with three vertical rows in front of row b, none extending below the level of row d; row 5s generally attached to the anterior of row b; row 5i/6i under row b near the anterior end of b; row d continuous; row 5i/6i extending below the level of row d.

Color - Dimorphic in color; males uniformily dark grayish brown with a midlateral row of seven black spots between the pectoral base and the caudal, sometimes an eighth spot on the caudal base; belly pale; head mottled; a dark vertical area behind and above the corner of the mouth, a dark vertical line along the preopercular margin, and three dark spots along the course of the lateral canal; lips and chin dark; females are mottled and appear barred, the seven irregular bars passing through the seven black spots which are less distinct; seven dark areas along the base of the dorsal fins, each cirresponding with one of the bars and each usually consisting of two spots; the entire belly is pale.

Distribution - Known only from the Colon area of Panama.

Habitat -

Notes -