Tog’ayli baliqlarning belgilarini ajratib ko’rsating.
1)tanasi tangachalar bilan bir tekis qoplangan; 2)suzgich pufagi bo’ladi; 3)suzgich pufagi bo’lmaydi; 4)faqat tuxum qo’yib ko’paydi; 5)jabra qopqog’i jarbani himoya qilib turadi; 6)jabra qopqog’i yo’q; 7)skeleti tog’aydan iborat; 8)skeleti suyakdan iborat; 9)ko’pchligini tirik tug’ib ko’payadi.
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3,6,7,9
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1,3,8,9
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3,4,6,7
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1,4,6,8
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2,5,7,9
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