Grallenia arenicola Shibukawa & Iwata, 2007
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Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  1.94 cm SL (male/unsexed); 2.26 cm SL (female)
Environment:  reef-associated; marine; depth range 10 - 50 m
Distribution:  North Pacific: Japan.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 7-8; Anal spines: 1-1; Anal soft rays: 7-8; Vertebrae: 27-28. This species is characterized by the following: second dorsal-fin rays I, 7-8 (usually I, 7); anal-fin rays I, 7-8 (usually I, 7); vertebrae 10+17-18=27 (usually 10+17=27); dorsal-fin spines not elongated in either sex; second dorsal fin does not reach the caudal-fin base when adpressed, length of longest ray 14.0-17.6% of SL; length of longest ray of anal fin 8.9-13.3% of SL; scales on body extending anteriorly to just behind pectoral-fin base; weak, low pelvic frenum; length of pectoral fin 20.7-25.9% of SL; caudal-peduncle length 24.6-28.6% of SL; cephalic sensory canals with pores C' (unpaired), D (unpaired), E and F'; orange line absent on dorsal fins (Ref. 75132).
Biology:  Found to be solitary on sandy bottom, around boulders or rocky reefs (Ref. 75132).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Capuli, Estelita Emily - 15.04.08
Modified by: Bailly, Nicolas - 01.09.17

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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