Scientific Name
Trimma volcana
Common Name
Volcano pygmy goby
Biology
Dorsal
spines
(total): 7;
Dorsal
soft rays
(total): 10-11;
Anal
spines: 911. Diagnosis: Characterized by having large spots on the head and body; moderate to well-developed interorbital and postorbital trenches; scales on the pectoral and pelvic fin bases, except on cheeks, opercles, or midline of the nape; a posterior nostril which is adnate to the eye; a fifth pelvic fin ray that is 80-9% of the fourth and is branched dichotomously twice (Ref. 57687).