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Percopsiformes
References
Images
Illustrated comparison of body shapes for various fish: a dark anglerfish with a bioluminescent lure, a round pancake batfish, a flat sargassum fish, a slender Eastern cleaner-clingfish, a dark deep-sea angler, a silvery beardfish, and a pale Southern cave fish. Each fish is labeled with its common and scientific name, representing different orders within Paracanthopterygii.
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Percopsiformes

fish order
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Learn about this topic in these articles:

  • paracanthopterygian
    / General features

    …are about 9 species of percopsiforms, or trout-perches, and about 385 species of ophidiiforms (that is, the pearlfishes and cusk-eels).

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    …are about 9 species of percopsiforms, or trout-perches, and about 385 species of ophidiiforms (that is, the pearlfishes and cusk-eels).

    Read More
  • A porcupine fish in the Andaman Sea
    fish
    / Annotated classification

    Order Percopsiformes (trout-perches, pirate perches, and cave fishes) Mouth gape and buccal dentition reduced; median fin spines reduced or lost; head with spine ornamentation; scale covering of the adipose fin lost. Length 8–13 cm (roughly 3–5 inches). 3 extant families, 1 fossil family, about 9 living…

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    Order Percopsiformes (trout-perches, pirate perches, and cave fishes) Mouth gape and buccal dentition reduced; median fin spines reduced or lost; head with spine ornamentation; scale covering of the adipose fin lost. Length 8–13 cm (roughly 3–5 inches). 3 extant families, 1 fossil family, about 9 living…

    Read More