Actinopterygii (Gigaclass) > Actinopteri (Class) > Teleostei (Subclass) > Gobiiformes (Order) > Gobioidei (Suborder) > Gobiidae (Family) > Gobiinae (Subfamily) > Tomiyamichthys (Genus)

Monster shrimpgoby, Mottled shrimp-goby, Oni-haze, オニハゼ, 富山鰕虎, 富山鰕虎魚,

Synonyme
Cryptocentrus oni (Tomiyama, 1936)

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Description
Dorsal spines (total): 6-7; Dorsal soft rays (total): 11; Anal spine: 1; Anal soft rays: 10-11. Triangular first dorsal fin without prolonged spines; United pelvic fins, well developed frenum present; Longitudinal scale series: 74-91; Head without scales; Body covered by cycloid scales; Greatest depth of body: 5.8-6.5 in SL; Rounded caudal fin, a little shorter than head length; Reduced posterior oculoscapular sensory canal, single pore (H') present. Max. length: 11.0 cm. Depth range: 10 - 30 m.

Color
Whitish body color; Presence of dark band below eye; Clusters of irregular brown spots covering body; 4-5 enlarged brown spots along ventral side; Several diffuse brown bars on side; Rear edge of dorsal fin with partially ocellated black spot; White coloration on basal portion of pectoral fin.

Etymology
Tomiyamichthys: in honor of ichthyologist (sometimes spelled Ichiro) Tomiyama (1906-1981), Tokyo Imperial University, who described type species, Tomiyamichthys oni, in 1936 + from Greek, ichthys = fish.
Oni: from japanese word, oni = demon, ogre, spirit of a deceased person.
Original description: Cryptocentrus oni Tomiyama, 1936 - Type locality: Tokyo fish market, thought to be from Izu, Shizuoka Prefecture, Japan.

Distribution