Percopsiformes
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Percopsiformes Temporal range: Eocene–Recent [1] | |
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Amblyopsis spelaeus | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Percopsiformes L. S. Berg, 1940 |
Families | |
Amblyopsidae (cavefishes) | |
The Percopsiformes are a small order of ray-finned fishes, comprising the trout-perch and its allies. It contains just 9 species, grouped into three families.[2]
They are generally small fish, ranging from 5 to 20 cm (2.0 to 7.9 in) in adult body length. They inhabit freshwater habitats in North America. They are grouped together because of technical characteristics of their internal anatomy, and the different species may appear quite different externally.[1]
References
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