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Diversity in Euteleost Fish Families and Species

Explore the Euteleostei group, including Ostariophysi, Protacanthopterygii, and Esociformes, encompassing various families like Esocidae and Umbridae with distinct species such as redfin pickerel and mudminnows. Learn about their habitats, behaviors, and evolutionary adaptations.

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Diversity in Euteleost Fish Families and Species

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  1. Week 7: Euteleostei Ostariophysi Protacanthopterygii Esociformes

  2. Euteleosts = “true teleosts”

  3. Protacanthopterygii Osmeriformes Esociformes Salmoniformes

  4. Esociformes ~ 2 families

  5. Esocidae ~5 sp. redfin pickerel ~1 ft. pikes (introduced) muskelunge ~60 lbs; 3 ft pickerels (native)

  6. gar pike-characin pike or pickerel needflefish pike killifish barracuda pike-head Example: convergent evolution distant relatives converge ‘lie-in-wait’ or ‘ambush’ predators

  7. northern pike Esox lucius

  8. northern pike fingerling

  9. Umbridae ~5 sp. (eastern U.S.) mudminnows (Umbra) Umbra pygmaea ambush predators ~ 8 in burrows in mud and breathes air

  10. Umbridae (western U.S.) blackfish (Dallia) low oxygen habitat

  11. habitat • activity role of Hb and pH (via CO2) species A Sacramento blackfish

  12. species A Text: Fig. 4.4A (Hb pH-induced effects on “inactive” fish) Alaska blackfish Dallia pectoralis

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