Eubranchipus oregonus

• Very rare; known form less than 80 locations worldwide

• Known  from lower mainland, Vancouver Island and some Gulf Islands, but at very few sites

• Found in  temperate rainforest habitats from California to Southern British Columbia

• Isolate populations in Oklahoma



Identification Tips:

• Large free-swimming invertebrate (to 35 mm)
• May be reddish-orange, white, or greenish-blue
• Swims upside down

Life History:

• Found in small temporary ponds cold, quiet, fishless waters of well vegetated, temporary pools
• Eggs remain as pond dries and hatch into a new generation when wet conditions return
• Free swimming shrimp may be found during winter and early spring
• Filter feeds detritus from the water and scrape periphyton from the pond bottom

Very SensitiveSomewhat SensitiveFacultativeSomewhat TolerantVery Tolerant

Primary Information Source:
Voshell, J. Reese. 2002. A Guide to Common Freshwater Invertebrates of North America. McDonald and Woodward Publishing Company. Blacksburg, Virginia.