Troutnut.com Fly Fishing for Trout Home
User Password
or register.
Scientific name search:

> > What in the world are these things ?

Tuckcast has attached this picture to aid in identification. The message is below.
View Full SizeView Full Size (4.9X larger)
TuckcastJuly 14th, 2019, 11:22 am
Posts: 2I took these from the mouth of a trout I caught in Oil Creek in
NW PA. I occasionally find these in the mouths of fish in this stream. These bugs were out of water for about 8 hrs when I remembered about them. As soon
as I put them in water 2 of them just took off swimming. The 3rd one had expired. What I’d like to know is: Are these fish food or parasites of some sort? The large one is about a size 18 nymph hook.
TaxonJuly 14th, 2019, 6:44 pm
Site Editor
Plano, TX

Posts: 1291
Hi Tuckcast-

Welcome to this site, :-)
Roger Rohrbeck
www.FlyfishingEntomology.com
MillcreekJuly 14th, 2019, 6:46 pm
Healdsburg, CA

Posts: 327
I think they may be Argulus americanus. It's a parasite. Further information can be found here;

https://www.google.com/search?q=argulus+americanus&tbm=isch&source=univ&sa=X&ved=2ahUKEwjlqZmv8bXjAhWLQs0KHTibAX4QsAR6BAgFEAE&biw=1536&bih=722&dpr=1.25#img
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
TuckcastJuly 15th, 2019, 4:04 am
Posts: 2Thanks so much for the ID. I
Guess I won’t bother trying to tie an imitation.

Quick Reply

You have to be logged in to post on the forum. It's this easy:
Username:          Email:

Password:    Confirm Password:

I am at least 13 years old and agree to the rules.
Most Recent Posts
Re: Caddis on a zig zag
In General Discussion by TDMunro (Partsman replied)
Re: Fly Tying Vise
In Gear Talk by William99 (DocWet replied)
Re: Rhyacophila betteni group
In Rhyacophila Caddisfly Larva by Creno
Re: This appears to be Dixa sp.
In Dixa True Fly Larva by Creno (Jmd123 replied)
Re: The boys were back in town, Chapter 4 part II
In the Photography Board by Jmd123
Re: The boys were back in town, Chapter 4: new digs, new waters, new fish!
In the Photography Board by Jmd123
Psocodea
In Psocodea Insect Adult by Creno
Rhyacophila hyalinata group
In Rhyacophila vocala Caddisfly Larva by Creno
Re: Don't think it is Gumaga........
In Lepidostoma Little Brown Sedge Larva by Creno (Troutnut replied)
New Instagram account
In Site Updates by Troutnut