Order Summary for Stomiiformes
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Main Ref |
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Order |
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Stomiiformes lightfishes and dragonfishes |
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Class |
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Teleostei |
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Sister Order |
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Aulopiformes 70 M years |
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Ref. |
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First Fossil Record |
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late Cretaceous |
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Occurs in |
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Marine |
Fresh |
Brackish |
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Remark |
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Luminescent organs (photophores) present; chin barbel present in some; premaxilla and maxilla in gape of mouth - both have teeth; mouth extending past eye in most; scales, if present, cycloid and easily lost; pectoral, dorsal, or adipose fins absent in some; ventral adipose fin present in some; pelvic fin rays 4-9; branchiostegal rays 5-24. Color in most is dark brown or black; some are silvery (primarily some Gonostomatoidei). Most tropical to temperate; many are deep-sea. |
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Class etymology |
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Greek aktis = ray, thunderbolt, beam + Greek pterygion, diminutive of pteryx = wing, fin. Ref. 45335. |
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Order etymology |
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Greek, stoma = mouth + Latin, forma = shape (Ref. 45335). |
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Families |
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