Acheilognathidae (Bitterlings) |
7.93 cm SL (male/unsexed) |
benthopelagic; freshwater; brackish; depth range - 40 m |
Asia: Japan. Five subspecies were recognized: Acheilognathus tabira erythropterus Pacific Ocean side of eastern Honshu (Miyagi, Tochigi, Ibaraki, Chiba Prefectures and Tokyo Metropolis); Acheilognathus tabira jordani in Japan Sea side of western Honshu (Toyama, Ishikawa, Fukui, Tottori and Shimane Prefectures); Acheilognathus tabira nakamurae in Kyushu area; Acheilognathus tabira tabira in Western Honshu; and Acheilognathus tabira tohokuensis in Japan Sea side of eastern Honshu (Akita, Yamagata, Fukushima in western area and Niigata Prefectures). |
Dorsal soft rays (total): 11-14; Anal soft rays: 11-13; Vertebrae: 35-38. Can be diagnosed by having the following characters: dorsal fin with iii, 9-11 rays; anal fin with iii, 9-10 rays; dorsal fin in males grayish; anal fin in nuptial males white; absence of black blotch on dorsal fin in juveniles; eggs short ellipsoid, ratio of major axis to minor axis, 1.4-1.7 (Ref. 78070).
Description: D iii,9-11; A iii,8-10; P i+ 14-16; V i+7 (Ref. 78070). |
Inhabits rivers, creeks, lakes and ponds in plains. Also occurs in mouths of rivers draining into lagoons, in rocky shores of rivers and irrigation creeks, and in floodplain pools. Deposits its eggs into host mussels (Ref. 78070). |
Near Threatened (NT); Date assessed: 08 December 2017 (B2ab(i,ii,iii,iv,v)) Ref. (130435)
|
harmless |
Five subspecies were recognized: Acheilognathus tabira erythropterus Pacific Ocean side of eastern Honshu (Miyagi, Tochigi, Ibaraki, Chiba Prefectures and Tokyo Metropolis); Acheilognathus tabira jordani in Japan Sea side of western Honshu (Toyama, Ishikawa, Fukui, Tottori and Shimane Prefectures); Acheilognathus tabira nakamurae in Kyushu area; Acheilognathus tabira tabira in Western Honshu; and Acheilognathus tabira tohokuensis in Japan Sea side of eastern Honshu (Akita, Yamagata, Fukushima in western area and Niigata Prefectures) (Ref. 78070). Recorded from western Honshu in Aichi, Gifu, Mie, Shiga, Kyoto, Osaka, Hyogo and Okayam Prefectures (Ref. 78070); Lake Biwa, the Yodo River and the Nobi Plain (Ref. 559). Found along the shore up to 30-40 m depth in Lake Biwa and in numerous small nearby ponds continuous with the lake (Ref. 78070). Spawning season is from April to August in Futatsukawa Creek, Fukuoka Prefecture (Ref. 37350). Status of threat in the 2005 Red Data Book of Shiga Prefecture : endangered (Ref. 79825).
Status of threat: Endangered (Ref. 94887). |
Source and more info: www.fishbase.org. For personal, classroom, and other internal use only. Not for publication.