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Characiformes (Characins) >
Characidae (Characins) > Incertae sedis
Etymology: Hyphessobrycon: Greek, hyphesson, -on, -on = a little smaller + Greek, bryko = to bite (Ref. 45335); togoi: Named for Carlos Togo, expert and pioneer of fish research in pampasic lagoons.
環境 / 気候 / 範囲
生態学
; 新鮮な水 底生の漂泳性. Tropical, preferred ?
South America: Salado River system and tributaries of Río de la Plata in Argentina.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 5.6 cm SL オス/雌雄の選別がない; (Ref. 57841); 6.8 cm SL (female)
簡単な記述
形態学 | 形態計測学
脊つい: 35. This species can be distinguished from all its congeners, except Hyphessobrycon langeanii Lima & Moreira, in having a well-defined, round to horizontally oval humeral spot. It differs from H. langeanii by the possession of a second humeral spot (vs. absent), maxilla not reaching anterior edge of orbit (vs. maxilla reaching middle of orbit) and infraorbitals 3 and 4 separated (vs. coossified). Other diagnostic characters of H. togoi include: a short expanded maxilla with 1 large multicuspid tooth; premaxilla with an outer row of 3 small teeth, with 5 or 6 cusps, relatively apart from each other; an inner series with 5 teeth that are distally broader, with numerous cusps (6-11) and overlapping each other; iv-v, 17-20 anal-fin rays; 31-36 scales on the longitudinal series; presence of bony hooks on all fins of the mature males (Ref. 57841).
In Buenos Aires province, this species is reported to be found in the Salado River and in ponds, marshes and creeks within the Salado basin. The Chascomús, Lobos and Lacombe lagoons are extensive water-bodies with abundant floating and submerged vegetation). These lakes are a portion of a lenthic environment system which is one of the most remarkable features of the wet pampa. Hyphessobrycon togoi is not abundant with respect to other species occurring in these lagoons, but it is sometimes caught in canals and flooded areas near the lagoons. The Salado River crosses Buenos Aires Province from northwest to southeast, running for ca 690 km in the Pampasia and finally draining into Bahía de Samborombón. The new species was also reported from Matanza River, a highly polluted environment draining into the Río de la Plata, where some of the most densely populated areas of Argentina lies along the middle and lower sections of this river, coupled with a high and complex industrial concentration (Ref. 57841).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Miquelarena, A.M. and H.L. López, 2006. Hyphessobrycon togoi, a new species from the La Plata basin (Teleostei: Characidae) and comments about the distribution of the genus in Argentina. Rev. Suisse Zool. 113(4):817-828. (Ref. 57841)
CITES (Ref. 94142)
Not Evaluated
Human uses
より多くの情報
共通名の類義語代謝捕食動物生態毒性繁殖成熟放精生産力卵卵の開発
Age/Size成長体長-重さLength-length体長組成形態計測学形態学幼生幼生の動力補充豊度
参考文献水産養殖水産養殖の紹介緊張遺伝子の対立遺伝子頻度遺伝病気行列Mass conversion
協力者画像Stamps, Coins音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
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