angleščinaDistinguished uniquely from its congeners in Europe by having trunk and caudal peduncle covered by a complete series of 29-35 bony scutes. Other characters important to separate this species from other species of the genus include posterior edge of scutes crenulated and scutes forming a lateral keel on caudal peduncle. Scutes may be missing on posterior part of trunk in hybrid zone with Gasterosteus gymnurus and in some isolated freshwater populations of northeastern Europe (Ref. 59043). Identified by the 3 to 4 sharp, free spines before the dorsal fin, the pelvic fin reduced to a sharp spine and a small ray, and the series of plates along the sides of the body (Ref. 27547). Gill rakers long and slender, 17 to 25 on the first arch or strictly freshwater forms, 1 or 2 more in anadromous forms; lateral line with microscopic pores (Ref. 27547). The anadromous form is fully plated, with up to 37 plates on the sides and a rather pronounced keel on each side of the caudal peduncle (Ref. 27547). Dorsal spines separated from each other and from the soft-rayed fins, each spine having a reduced membrane attached to its posterior side; anal spine free from rest of the fin; posterior margin of pectorals nearly truncate; caudal truncate to slightly indented (Ref. 27547). Freshwater forms usually mottled brown or greenish; anadromous forms silvery green to bluish black (Ref. 27547). A few isolated populations are black (Ref. 27547). Sides usually pale; belly yellow, white or silvery (Ref. 27547). Fins pale; pectoral rays often have dark dots (Ref. 27547). Breeding males (except for black forms) become brilliant bluish or green with blue or green eyes, and the forward part of the body, especially the breast region, turns bright red or orange (Ref. 27547). Caudal fin with 12 rays (Ref. 2196).
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slovenščinaOdlikuje enolično od svojih sorodnih spojin v Evropi ob deblo in repna pecelj zajeti celoten niz koščen scutes 29-35. Drugih znakov, ki je pomembno ločiti ta vrsta od drugih vrst iz rodu vključujejo zadnji rob scutes crenulated in scutes, ki so lateralno kobilice na repna pecelj. Scutes morda manjka na zadnji del trupa v hibridni pas z Gasterosteus gymnurus in v nekaterih osamljene populacije sladkovodnih severovzhodne Evrope (Ref. 59043). Opredelila 3 do 4 oster, brez spines pred hrbtni plavuti, medenično plavuti zmanjša na oster hrbtenice in majhen žarek in vrsto plošč, ob straneh telesa (Ref. 27547). Dekle rakers dolge in vitke, 17: 25 na prvi lok ali strogo sladkovodnih oblike, 1 ali 2 v anadromne oblikah; Stranska cev z mikroskopske pore (Ref. 27547). Anadromne obliki popolnoma prekrita, s 37 plošče na straneh in precej izrazito kobilice na vsaki strani repna peclja (Ref. 27547). Hrbtni bodice ločeni drug od drugega in iz mehkih Rammie plavuti, vsak hrbtenice, imajo membrano znižanih pritrjeno na zadnji strani; analni hrbtenice brez ostale plavuti; zadnja stopnja pectorals skoraj Prireži; repna odsekana, da nekoliko zamaknjeni (Ref. 27547). Sladkovodnih oblike ponavadi lisasto rjave ali zelenkasto; anadromne oblike srebrno zelene v modro črna (Ref. 27547). Nekaj osamljenih populacij so črne (Ref. 27547). Straneh ponavadi Bleda; trebuh rumene, bele ali srebrno (Ref. 27547). Plavuti bledo; prsno žarki imajo pogosto temne pike (Ref. 27547). Samci (razen črne oblike) postanejo briljantno modro ali zeleno modre ali zelene oči in prednji del telesa, še posebej v regiji prsi, postane svetlo rdeča ali oranžna (Ref. 27547). Repna plavut z 12 žarki (Ref. 2196).
