|
Pterothrissus gissu Hilgendorf, 1877 Japanese gissu |
|
|
photo by
Yang, N.-S. |
| Family: | Albulidae (Bonefishes), subfamily: Pterothrissinae | |||
| Max. size: | 50 cm TL (male/unsexed) | |||
| Environment: | benthopelagic; marine; depth range 147 - 1000 m | |||
| Distribution: | Northwest Pacific: Japan (Ref. 559), China (Ref. 47439) and Russia (56557). | |||
| Diagnosis: | Dorsal spines (total): 0-0; Dorsal soft rays (total): 54-65; Anal spines: 0-0; Anal soft rays: 10-13; Vertebrae: 105-107. This species is distinguished by the following set of characters (holotype measurements in parentheses): supraneural bones 6-7; dorsal-fin rays 54-65 (mode 58); total vertebrae 105-107 (107); pored lateral-line scales 99-109 (105); pre-dorsal scale rows 13-20 (16); head length 23-31 % (mean 27 %) of SL; pectoral-fin length 10-18 % (15 %) of SL; pre-dorsal-fin length 31-39 % (35 %) of SL; dorsal-fin base length 47-56 % (52 %) of SL; postorbital length 9-12 % (10 %) of SL; upper caudal-fin length 16-32 % (21 %) of SL (Ref. 109573). | |||
| Biology: | Found in deep waters. | |||
| IUCN Red List Status: | Data deficient (DD); Date assessed: 29 March 2011 Ref. (130435) | |||
| Threat to humans: | harmless | |||