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क्रम सारांश for Atheriniformes
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मुख्य संदर्भ |
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क्रम |
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Atheriniformes silversides |
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वर्ग |
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Teleostei |
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Sister Order |
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Beloniformes 45 M years |
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संदर्भ |
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First Fossil Record |
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early Tertiary |
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Occurs in |
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समुद्री |
Fresh |
खारा |
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टिप्पणी |
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Usually two dorsal fins, the first, if present, with flexible spines; anal fin usually preceded by a spine; lateral line absent or very weak; branchiostegal rays 4-7; narial openings paired; pelvic fins abdominal, subadominal, or thoracic in position (essentially absent in female phallostethids and highly modified in male phallostethids); parietals usually present. |
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वर्ग etymology |
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Greek aktis = ray, thunderbolt, beam + Greek pterygion, diminutive of pteryx = wing, fin. Ref. 45335. |
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क्रम etymology |
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Greek, atherine = a kind of smelt + Latin, forma = shape (Ref. 45335). |
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परिवार |
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