AUGUST 5 – 11, 2024

Invasive Rusty Crayfish Contest

Join our Annual Invasive Crayfish Contest

Since 2016 RLHT has documented the Invasive Rusty Crayfish, Faxonius rusticus, in the Rangeley Lakes Region. This year, we’ve decided to take action against these invaders. Join us in irradicating Rusty Crayfish from the region. 

 

A valid Maine fishing license is required for anyone 16 years of age or older, to fish in inland waters or transport fish taken from inland waters.

Schedule of Events

Registration is Open

Monday | Secure your spot in the contest! Register online or in person at RLHT.

Shorts

Tuesday | Scroll through our Rusty Crayfish YouTube video gallery to learn how to catch, identify and eat these invaders.

Touch Tank

Wednesday | Join us at RLHT at 2 PM for a hand-ons experience with Rusty Crayfish.

Colorful Crayfish

Thursday | Stop by RLHT or the Chamber to pick up a crayfish activity book!

Traveling Touch Tank

Friday | We'll be out and about with our tank! Want us to visit?

Cooking with Crayfish

Saturday | We'll be sharing recipes for cooking up crawdads!

Contest Closes

Sunday | Join us at RLHT for the crayfish weigh-in and prizes at 10 AM.

Registration & Rules

Teams

Entry is $5 per participant.

 

Teams of up to 4 are permitted.

 

A valid Maine fishing license is required for anyone 16 years of age or older, to fish in inland waters or transport fish taken from inland waters.

Collection

Turn over rocks and logs and use hand nets to catch crayfish as they swim away (backward).

 

They are also out at night in the shallows, so try shining a flashlight into the water.

 

All crayfish must be bagged by individual waterbodies and include the GPS location of where they were caught. Please record the number of native crayfish you catch. 

Modified minnow traps (~3.5 cm diameter opening) should be in ~6 feet of water; usually (but not always) rocky or vegetated sandy bottom is preferred.

 

Traps can be baited with a small handful of dry cat or dog food, hot dogs, cans of cat food with holes poked in the lid, or parts of dead fish.

 

Don’t throw used bait back in the water!

 

Many crayfish do not trap well – traps must be left “soaking” for two or more nights, and hand collection may be needed.

 

Traps must be marked with the owner’s name and contact information.

 

All crayfish must be bagged by individual waterbodies and include the GPS location of where they were trapped. Please record the number of native crayfish you catch. 

 

Limited traps are available at RLHT. First come, first served.

Storage

You may freeze crayfish in a ziplock in your freezer. 

 

Placing crayfish in alcohol in a container is also acceptable for preserving specimens. 

 

All crayfish must be bagged by individual waterbodies with the GPS location of the trap. 

Weigh-in & Prizes

Join us at 10 AM Sunday, August 13, at RLHT at 2424 Main St, Rangeley. 

$300 in prizes to be awarded for Greatest Overall Weight:

  • 1st – $150
  • 2nd – $100
  • 3rd – $50

Registration Opens 8/1

Why are Rusty Crayfish bad for the Rangeley Lakes?

Competing & Evicting Natives

Since they directly compete with native crayfish for food and cover, they starve the natives and force them out where other animals can more easily prey on them. (Check out our source. Learn more here.)

 

They pose a significant threat to native crayfish populations due to their ability to outcompete and slowly reduce their population to nothing or replace them with a hybrid of rusty and native crayfish. (Check out our source. Learn more here.)

Wrecking Habitats for Fish & Invertebrates

Since they directly compete with native crayfish for food and cover, they starve the natives and force them out where other animals can more easily prey on them. (Check out our source. Learn more here.)

 

They pose a significant threat to native crayfish populations due to their ability to outcompete and slowly reduce their population to nothing or replace them with a hybrid of rusty and native crayfish. (Check out our source. Learn more here.)

Learn to Identify Rusty Crayfish

Rusty Crayfish Characteristics

Adults generally are 3-5 inches (7-13 cm) long.

 

Claws larger and smoother than many other crayfish, usually without wart-like white bumps

 

Claws have an oval gap when closed; no distinct thin slit or notch present

 

The carapace is marked with dark rust-colored spots

 

Claw tips have black bands and orange tips.

Determine Your Crayfish Sex

Males

The arrow points to the gonopod legs used to transfer sperm to the female.

Females

The arrow points to the seminal receptacle between the legs.

Watch These Shorts

Getting to Know Invasive Rusty Crayfish

Straying Far From Home

How to Catch, Cook, and Clean Rusty Crayfish

Managing the Invasive: Rusty Crayfish

Looking to cook up your catch?

A striking Common Loon holds a freshly caught crayfish in its beak in the bright sunlight. ~ 07/07/2018 ~ ¹⁄₆₄₀ sec at f/4.0 on Aperture priority ~ ISO100 at 500 ~ using a 500 mm f/4 on a NIKON D4S

CONTACT

Derby Inquiries

Julia Morin

Julia Morin

Headwaters Lake Protection Program Coordinator