This page shows Euteleostei's splits and focuses on the orders isolated by those splits. The first split is between Protacanthopterygii and Neognathi. Protacanthopterygii has two orders: Argentiniformes and Salmoniformes. Neognathi splits into the order Esociformes and Neoteleostei. Neoteleostei will be explored in the following pages.
- Euteleosteomorpha
- Lepidogalaxii
- Protacanthopterygii
- Galaxiiformes
- Argentiniformes - Slickheads, etc.
- Esociformes - Pikes, etc.
- Salmoniformes - Salmon, Trout, etc.
- Stomiatii
- Osmeriformes
- Stomiiformes
- Neoteleostei (next page, 34-VII)
The order of Salamanderfishes. As of 2024, 0 species of Lepidogalaxiiformes have been observed in iNaturalist in the US and just one throughout the world. All three observations of Lepidogalaxias salamandroides have been near the tip of Southwestern Australia.
- FAMILY LEPIDOGALAXIIDAE
- Salamanderfish/Dwarf Pencilfish (Lepidogalaxias salamandroides)
The order of Galaxiids. As of 2024, 0 species of Galaxiiformes have been observed in iNaturalist in the US and 42 throughout the world. The order is limited to the Southern Hemisphere.
- FAMILY GALAXIIDAE - GALAXIIDS
- Common Galaxias (Galaxias maculatus)
The order of Marine Smelts. As of 2024, 3 species of Argentiniformes have been observed in iNaturalist in the US and 21 throughout the world.
- FAMILY ARGENTINIDAE - ARGENTINES
- Pacific Argentine (Argentina sialis) - 7 (San Diego)
- FAMILY BATHYLAGIDAE
- FAMILY MICROSTOMATIDAE
- FAMILY OPISTHOPROCTIDAE - BARRELEYES
- Pacific Barreleye (Macropinna microstoma) - 7 (Monterey Bay)
The order of Pikes and Mudminnows. As of 2024, 11 species of Esociformes have been observed in iNaturalist in the US and 15 throughout the world. iNaturalist classifies this order as a suborder within the order Salmoniformes (below).
- FAMILY ESOCIDAE - PIKES
- Northern Pike (Esox lucius) - most iNat observations in the US for Esociformes - 3 (Adirondacks), 8 (Shedd)
- Chain Pickerel (Esox niger)
- American Pickerel (Esox americanus)
- Muskellunge (Esox masquinongy)
- FAMILY UMBRIDAE - MUDMINNOWS
- Central Mudminnow (Umbra limi)
There is only one family in the order of Salmons, Trouts and Whitefishes: Salmonidae. As of 2024, 41 species of Salmoniformes have been observed in iNaturalist in the US and 118 throughout the world.
- FAMILY SALMONIDAE
- SUBFAMILY SALMONINAE
- Rainbow Trout/Steelhead (Oncorhynchus mykiss) - most iNat observations in the US for Salmoniformes - 1 (Wind River Range), 6 (RMNP), (Olympic NP)
- Brook Trout (Salvelinus fontinalis) - NOAH - 6 (RMNP), Little Lakes Trail, CA
- Brown Trout (Salmo trutta) - 1 (Wind River Range), (Olympic NP)
- Sockeye Salmon (Oncorhynchus nerka) - (Olympic NP)
- Chinook Salmon (Oncorhynchus tshawytscha) - (Olympic NP)
- Chum Salmon (Oncorhynchus keta) - (Olympic NP)
- Coho Salmon (Oncorhynchus kisutch) - (Olympic NP)
- Pink Salmon (Oncorhynchus gorbuscha) - (Olympic NP)
- Atlantic Salmon (Salmo salar)
- SUBFAMILY COREGONINAE
- Mountain Whitefish (Prosopium williamsoni) - Mountain West
- SUBFAMILY THYMALLINAE
- Arctic Grayling (Thymallus arcticus) - Alaska, Wind River Range
The order of Smelts and allies. As of 2024, 9 species of Osmeriformes have been observed in iNaturalist in the US and 21 throughout the world.
- FAMILY OSMERIDAE - SMELTS
- Eulachon (Thaleichthys pacificus) - most iNat observations in the US for Osmeriformes - 5 (Portland, Redwoods)
- Rainbow Smelt (Osmerus mordax) - most iNat observations in the world for Osmeriformes - 8 (Great Lakes)
- FAMILY RETROPINNIDAE - NEW ZEALAND SMELTS
- FAMILY PLECOGLOSSIDAE
- FAMILY SALANGIDAE
The order of Dragonfishes and allies. As of 2024, 5 species of Stomiiformes have been observed in iNaturalist in the US and 50 throughout the world.
- FAMILY GONOSTOMATIDAE
- Brauer's Bristlemouth (Cyclothone braueri) - 7 (Monterey Bay)
- FAMILY PHOSICHTHYIDAE - LIGHTFISHES
- Lightfish (Ichthyococcus ovatus)
- FAMILY STERNOPTYCHIDAE
- Atlantic Pearlside (Maurolicus weitzmani) - most iNat observations in the US for Stomiiformes - 3 (Gulf of Maine)
- Marine Hatchetfish (Sternoptyx obscura) - 7 (Monterey Bay)
- FAMILY STOMIIDAE - BARBLED DRAGONFISHES
- Pacific Viperfish (Chauliodus macouni) - 7 (Monterey Bay)
- Sloane's Viperfish (Chauliodus sloani) - 10 (Atlantic Ocean)
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