Description (only differentiating characters or characters not otherwise mentioned in the introduction, identification key, and Table 1 are discussed). Preserved specimens (Figure 1 d) are most notable for the black stripe extending across the head posteriorly from the postorbital margin at about the three o’clock position. The stripe may extend for a variable, usually short, distance, onto the body anteriorly. On each side of the ventral surface of the head of the male holotype there are two pairs of dark spots similar to those of E. caeruliventris, although the halo is not evident (presence or absence of the spots varies in other males). The body is not so darkly dusky anteriorly as in E. caeruliventris. The fins are similar to those of E. caeruliventris, except that an immaculate stripe-like basal area in the segmented-ray portion of the dorsal fin is not evident. Females are generally more pale than males, and the dark spots on the ventral head surface are absent or replaced by one or two pairs of larger, pale spots (Figure 1 c) in the positions occupied by the dark spots of the male. In life (Figure 2 b), the most obvious color markings are the bluish abdominal area, a horizontal pair of white stripes extending through the orbit dorsal and ventral to the pupil, a pair of small white spots in the interorbital region anteriorly, a fine, white mid-predorsal stripe (all of these white stripes may be very faintly tinged with yellow), the black stripe extending posteriorly from the orbit margined ventrally by a bright white stripe, which continues well out onto the body. The head and body are brownish dorsal to the black stripe, and may show indications of a few broad, slightly darker bands anteriorly; posteriorly the body is similar to E. caeruliventris.
Sumber: Ecsenius caeruliventris and E. shirleyae, two new species of blenniid fishes from Indonesia, and new distribution records for other species of Ecsenius.